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Donkey Calf Raise Attachment Challenge

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3D Technology challenges you to design a Donkey Calf Raise Attachment for a Smith machine.

What is Donkey Calf Raise

The Donkey Calf Raise is a calf raise done in a bent-forward position. The upper body is leaning over at 90 degrees and is horizontal while lower body remains vertical. The Donkey Calf Raise should be a mainstay of any effective calf-building routine. It's simply one of the best exercises for developing the calves. The reason is the strong stretch you can put on the calves at the bottom of every single rep because of how your body and legs are positioned during the exercise. Donkey Calf Raise machines are not common in all gyms and if you're training at home, then donkey calf machine most probably wasn't on your priority list of purchases.

What is Smith machine

The Smith machine is a piece of equipment used in weight training. It consists of a barbell that is fixed within steel rails, allowing only vertical movement. New variations allow a small amount of forward and backward movement. A Smith machine often includes a weight rack in the base to help stabilize it. Some Smith machines have the barbell counterbalanced. The machine can be used for a wide variety of exercises such as a squat, Bench press, or a Donkey Calf Raise which is shown in the image above.

Design an attachment for the Smith machine

Create a new Donkey Calf Raise Attachment for a Smith machine. One of the solutions 3D Technology has come up with so far is a design called a “Donkey Calf Raise Attachment” for the Smith machine. You basically attach the Donkey Calf Raise Attachment” to the Smith machine barbell and perform the exercise. Please see below images of current design of the Donkey Calf Raise attachment for Smith machine. You may use this as a starting point and propose an improvement or redesign the attachment mechanism completely.

The specifications, requirements and technical details will be updated by January 27 based on your questions and feedback. This gives enough time for everyone to ask questions, talk with 3D Technology, and make sure GrabCADrs know what to work on and what 3D Technology expects of the winning entries.

Requirements

  • You must include:
    - STEP of IGES file.
    - 3D and 2D CAD file.
    - Brief design notes explaining the rationale behind the design.
    - Description of design materials and dimensions.
    - FEA stress results to verify design can handle up to 1500 pounds of compressive force (updated on Feb 3).

  • Design requirements:
    - The basic model should be light in weight but strong enough to support up to 1,500 pounds.
    - The design should have a locking mechanism or quick release clamp that will allow the device to lock onto a smith machine Olympic barbell (25mm to 28mm).
    - The locking mechanism or quick release clamp should have rubber padding that fits around a Smith Machine Olympic Barbell handle so as not to damage the barbell.
    - The locking mechanism or quick release clamp apparatus should be able to withstand 1,500 pounds.
    - The locking mechanism or quick release clamp should be able to attach and unlock from the smith machine barbell in a quick manner without any tools.
    - The lower back padding should be designed to fit comfortably on the lower back even if an excessive amount of weight is used.
    - The new design should be modern, ergonomic, durable, appealing to the eye, comfortable.

    Additional requirements (added Feb 3)
    - Material can be anything that the designer sees fit to use.
    - Some form of padding should be used on the attachment clamp so as not to damage the barbell.
    - Design dimensions will be left up to the designer.
    - Max manufacturing cost: $300

Rules

  • The competition is open to everyone. Multiple entries are acceptable. Team entries are welcome - prize will be transferred to team leader. Participants may only win one prize per Challenge.

  • Tag your entry with “DONKEYCALFRAISE” when uploading to GrabCAD. If you submit through the "Submit entry" button, this should be added automatically. Only entries with valid tag will participate. Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry. Private entries are not eligible.

  • By entering this competition, you 1. Warrant that the work is your original work. 2. To the best of your knowledge, it is not, and has not been in production or otherwise previously published or exhibited. 3. Neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trade mark, copyright or any other intellectual property right) of any other person.
    ______________________
    If you think an entry may infringe on existing copyrighted materials, please email challenges@grabcad.com.

  • Applicants are not entitled to any compensation or reimbursement for any costs. The applicant’s participation shall not constitute employment, assignment or offer of employment or assignment.

  • The sum of the Awards is the total gross amount of the reward. The awarded participant is solely liable for the payment of all taxes, duties and other similar measures if imposed on the reward pursuant to the legislation of the country of his/her residence, domicile, citizenship, workplace, or any other criterion of similar nature. Only 1 award per person.

  • Only public entries will be considered. Any private submissions will be made public at the Challenge deadline.

  • We will release the finalists before the final announcement to give the Community an opportunity to "vote" for their favorites in the comments. The jury will take these into consideration when picking the final winner. This new addition is based on feedback from you!

  • Winning designs will be chosen based on the rules and requirements. This Challenge ends on February 19, 2014 (11:59pm UTC). Winners will be announced by March 19, 2014.

  • Void where prohibited.

Prizes

Awards for TOP 3 places

1st Prize

$1,000 cash + GrabCAD scrapbook

2nd Prize

$500 cash + GrabCAD scrapbook

3rd Prize

$250 cash + GrabCAD scrapbook

The sponsor may offer the winner an opportunity to continue working on contract basis.

About the jury?

The jury is comprised of experts from 3D Technology and GrabCAD.

About 3D Technology

3D Technology, located in Houston, Texas is a Drafting company that provides complete 3D Modeling and detail-drafting services. Our goal is to provide our customers with professional, detailed, high quality 3D models, Computer Aided Design (CAD) drawings and other CAD drafting services.

77 comments

  • bj

    bj 10 months ago

    Thanks for presenting a fun engineering problem!
    How are you going to (un)lock the barbell from its frame??

    bj has uploaded 54 CAD models & has left 125 comments.
  • Rafael Acosta

    Rafael Acosta 10 months ago

    Yes as BJ states I think the trick part of the deign will be how to unlock the barbell from locks, but I think I have an idea it will be fun doing this challenge since I am sick of doing Donkey calf raises with a partner on my back.

    Rafael Acosta has uploaded 3 CAD models & has left 5 comments.
  • Juan Carlos Bravo

    Juan Carlos Bravo 10 months ago

    I have a question, What manufacturing methods will you use for the metal parts?

    Juan Carlos Bravo has uploaded 5 CAD models & has left 18 comments.
  • Ravichandra Jp

    Ravichandra Jp 10 months ago

    Nice challenge. By the way, second paragraph ends with, "....... such as a squat shown in the image to the right.". Where? in wikipedia?

    Ravichandra Jp has uploaded 41 CAD models & has left 96 comments.
  • Sara Sigel

    Sara Sigel 10 months ago

    @ravichandra See the main image. The Smith Machine is the rack holding the barbell.

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • Doug Davey

    Doug Davey 10 months ago

    What is the diameter of the bar?
    How does one know if the attachment is center? ..... if not, what stops the system from being imbalanced to one side (this can not be good)?
    Do you have to have a person helping you?

    Doug Davey has uploaded 41 CAD models & has left 389 comments.
  • paultahar

    paultahar 10 months ago

    does it looks really dangerous exercise??give huge load at spine, I hope it doesn't cause low back pain.

    paultahar has uploaded 13 CAD models & has left 52 comments.
  • Ruan Pretorius

    Ruan Pretorius 10 months ago

    @Doug, I hope I can help, the diameter is 28mm (smith machine Olympic barbell (28mm in diameter). and on the machine self, there is two supported shafts that guide the bar up and down (Like shown on first picture
    )If the Calf Raise Attachment is a bit off-center - it won’t really matter, the bar will still go up vertical. It’s always important to have n buddy with you
    Doesn’t matter how big or small you are, your legs can fold in at any time.

    Ruan Pretorius has uploaded 36 CAD models & has left 155 comments.
  • Jonathan

    Jonathan 10 months ago

    What is budget scope? Preffered manufacturing methods for the metal, clamps and padding???

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Leon van Rijn

    Leon van Rijn 10 months ago

    What are the expectations? What are the reasons you need a new design? What is wrong and what do you expect to be improved?

    Leon van Rijn has uploaded 2 CAD models & has left 11 comments.
  • Hevi

    Hevi 10 months ago

    @Leon van Rijn +1

    Hevi has uploaded 36 CAD models & has left 457 comments.
  • Joe Pollock

    Joe Pollock 10 months ago

    My back hurts just looking at that picture.

    Joe Pollock has uploaded 6 CAD models & has left 34 comments.
  • ZC Design

    ZC Design 10 months ago

    Can we get the model in the original image that includes the smith machine and the human model?

    It would help with reference and make for some better quality renders showing the device in use.

    ZC Design has uploaded 27 CAD models & has left 70 comments.
  • ZC Design

    ZC Design 10 months ago

    If we wanted to add a brand to our model would we use 3D Technology as the brand?

    ZC Design has uploaded 27 CAD models & has left 70 comments.
  • Jonathan

    Jonathan 10 months ago

    HAHAHAH @ Joe Pollock!

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Leon van Rijn

    Leon van Rijn 10 months ago

    is it desirable that both back supports (or more that 2) have independent joints and therefore can pivot/hinge independent from eachother?

    Leon van Rijn has uploaded 2 CAD models & has left 11 comments.
  • Steven Clark

    Steven Clark 10 months ago

    Am i allowed to summit an entry using a solidworks student version?

    Steven Clark has uploaded 3 CAD models & has left 2 comments.
  • Hevi

    Hevi 10 months ago

    @ Steven Clark - you can always upload .STEP .IGES file

    Hevi has uploaded 36 CAD models & has left 457 comments.
  • Bryan Morris

    Bryan Morris 10 months ago

    Very excited about this challenge. Being a Certified Personal Trainer, this hits home pretty hard!

    Bryan Morris has uploaded 48 CAD models & has left 308 comments.
  • Fabian Jones

    Fabian Jones 10 months ago

    Steven, as long as you submit a STEP or an IGES, you will be OK

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Fabian Jones

    Fabian Jones 10 months ago

    This piece of exercise equipment is not dangerous at all as long as you perform the exercise correctly. Any exercise can be harmful if done incorrectly.

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Fabian Jones

    Fabian Jones 10 months ago

    Designers Check out the web site: http://lifehardcore.wordpress.com/2013/12/03/smith-machine/

    Look at the 1st image of the woman doing a bench-press. Do you see the locking pin at the bottom left side of the image. You place the locking pin at whatever height is best suited for you. In the case of the Donkey calf raise; you set the locking pin at the best height and set the smith machine barbell on the locking pins and there is no need to rotate the bar. You just attach the Donkey Calf raise apparatus and get into position to perform the exercise.

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Hevi

    Hevi 10 months ago

    So what we should do with your "attachment"? There's no need for additional locking system in vertical axis (like u said - there is locking pin)... I was thinking about whole locking system - now I see theres no need for it; so we just need to design some mount for barbell? ;)

    Hevi has uploaded 36 CAD models & has left 457 comments.
  • Fabian Jones

    Fabian Jones 10 months ago

    Exactly!

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Fabian Jones

    Fabian Jones 10 months ago

    Smith Machine and human model [AutoCad] available for download!

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Lauri Poldre

    Lauri Poldre 10 months ago

    Thank you Fabian, here is the link to the file: https://grabcad.com/library/smith-machine-and-human-model-1

    Lauri Poldre has uploaded 1 CAD models & has left 134 comments.
  • Fahad Rafi

    Fahad Rafi 10 months ago

    anybody did FEA? steel yields, FOS ~0.4 when this much load is applied.

    Fahad Rafi has uploaded 118 CAD models & has left 244 comments.
  • paultahar

    paultahar 10 months ago

    i got 6.9 FOS

    paultahar has uploaded 13 CAD models & has left 52 comments.
  • Marjan Talevski

    Marjan Talevski 9 months ago

    Can I use any Freeware 3D modeling software or SolidWorks Student Version or do I have to use some software specifically?

    Marjan Talevski has uploaded 12 CAD models & has left 30 comments.
  • Fabian Jones

    Fabian Jones 9 months ago

    I don't care what software you use just as long as you submit a STEP or an IGES, you will be OK

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Sara Sigel

    Sara Sigel 9 months ago

    CAD files (neutral, 3D and 2D) should be added to entries before the deadline to be considered - apologies for the miscommunication!

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • Fabian Jones

    Fabian Jones 9 months ago

    Designers, please design the release clamp to accommodate a variety of different size Barbells. 25mm to 28mm

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • jamie

    jamie 9 months ago

    this is a tricky request Fabian lol. So you want the clamp to accept 25mm, 26mm, 27mm & 28mm. OR 25mm & 28mm Barbell? either way im going to have to get my thinking cap on to modify my model.

    jamie has uploaded 19 CAD models & has left 73 comments.
  • Fabian Jones

    Fabian Jones 9 months ago

    The clamp just needs to accommodate 25mm, 26mm, 27mm & 28mm barbells.

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Fabian Jones

    Fabian Jones 9 months ago

    The rubber padding that fits around the barbell can conform to accommodate 25mm, 26mm, 27mm & 28mm barbells.

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • jamie

    jamie 9 months ago

    Fabian - This is exactly what i have just done to my model. As i couldnt think of another way around reducing the clamp to the smaller diameter. :)

    jamie has uploaded 19 CAD models & has left 73 comments.
  • paultahar

    paultahar 9 months ago

    i need exact rubber diameter (inner & outer)

    paultahar has uploaded 13 CAD models & has left 52 comments.
  • Jonathan

    Jonathan 9 months ago

    anyone have any good links on how to perform stress testing analysis? Preferably using Solidworks.....thanks.

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Paul Hubers

    Paul Hubers 9 months ago

    Why does it have to lock on? Could it just clip on? The first thing that came to mind was the Manta Ray Squat Pad. http://www.verticaljumping.com/images/Manta_Ray_2.jpg

    Paul Hubers has uploaded 0 CAD models & has left 4 comments.
  • Yuva Balaji

    Yuva Balaji 9 months ago

    nice idea but it should withstand 1500pounds keep that in your mind dude

    Yuva Balaji has uploaded 22 CAD models & has left 13 comments.
  • jamie

    jamie 9 months ago

    a quick question - are we now showing stress results of - 1500lbs or 8400lbs? both are stated above in the requirements.

    jamie has uploaded 19 CAD models & has left 73 comments.
  • jamie

    jamie 9 months ago

    ok as to my question above - after a bit of research most smith machines max out at around 340lbs - and the average man is normally lifting about 200 - 300lbs on a standing calf raise. So surely 8400lbs is abit over the limit when it comes to this exercise and the amount that the smith machine can carry. (although i think it might be able to carry it - its just that there isnt enough room to get that much weight on to it)

    jamie has uploaded 19 CAD models & has left 73 comments.
  • Fabian Jones

    Fabian Jones 9 months ago

    Stress test should be done at 1500 pounds. The 8400 pounds is a misprint!

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Lalit

    Lalit 9 months ago

    What should be the targeted weight and Factor of Safety?

    Lalit has uploaded 19 CAD models & has left 17 comments.
  • Ruan Pretorius

    Ruan Pretorius 9 months ago

    any Body out there that would help me with the FEA stress results? I’ll Split the prize 50/50 if we win?

    Ruan Pretorius has uploaded 36 CAD models & has left 155 comments.
  • keith

    keith 9 months ago

    Attaching something is the easy bit, the added complication is that with smith machines you need raise the bar and twist to un-latch the mechanism, also same consideration when racking back in place.....

    keith has uploaded 23 CAD models & has left 53 comments.
  • Christos Georgoulas

    Christos Georgoulas 9 months ago

    i have seen a lot of nice entries here, but i don't understand... all those designs that fits 25 to 28 mm barbells and the only thing that tighten the barbells is the rubber itself, won't the rubber tear apart with everyday use?

    Christos Georgoulas has uploaded 23 CAD models & has left 86 comments.
  • Sara Sigel

    Sara Sigel 9 months ago

    @Christos It's a good idea to state why your solution will overcome everyday wear and tear then! :D

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • Sara Sigel

    Sara Sigel 8 months ago

    Don't forget to upload your entries - only one day left!

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • jamie

    jamie 8 months ago

    is the maximum manufacturing cost just for components plus assembly (ie. does not include tooling costs)

    jamie has uploaded 19 CAD models & has left 73 comments.
  • Fabian Jones

    Fabian Jones 8 months ago

    The $300 is total for everything!

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • jamie

    jamie 8 months ago

    I think you could machine from solid materials for the price of $300 per product. But you could really reduce the product cost by investing in tooling for die casting / injection moulding. Upfront cost of around $3000 for tooling (out of china) - would give you a part price of $8. Obviously you have to sell alot more to get this tooling cost back. @fabian - do you intend to go down the route of machining from solid??

    jamie has uploaded 19 CAD models & has left 73 comments.
  • Jonathan

    Jonathan 8 months ago

    +1 Jamie. Especially for this sort of product.

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Sara Sigel

    Sara Sigel 8 months ago

    Congratulations to all of the finalists! We still have a lot of narrowing down to do, so while we rank and look at entries in depth, give us your feedback. Which one is your favorite? Did we leave anything amazing off the list? See something we should know about? Let us know in the comments...

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • Jonathan

    Jonathan 8 months ago

    congratulations to all participants and finalists! my picks to come....

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Jonathan

    Jonathan 8 months ago

    from the finalists, stand outs for me,

    Donkey Calf Razor

    sturdy clamp, simple design

    Saddle Shaped Attachment

    sturdy clamp, simple design

    Donkey Calf Raise attachment

    agree with judges ,nice simple but will clampings ystem work.

    https://grabcad.com/library/stand-alone-donkey-calf-raise-xl-attachment-

    I like the addition of the arm, think it could work.

    The rest are derivatives of each other.

    Out of the two models I made, was so surprised to see this particular concept in the finalists, GC, you always surprise me with your choices! I really liked the other model and thought it would be chosen out of the two, but for sure my model has potential, one thing I would have liked to do is round the corners on the backbone so nothing sticks into your back ).

    Good luck to all, may the best DESIGN win!

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Joe Valverde

    Joe Valverde 8 months ago

    Hi Sara, great to the finalist picked! All very worthy entries.
    I think there is slight confusion with my design, it is ment to attach to the smith machine via the clamping system, and rotate horizontally when the user moves it into position. I put stand alone as the title, as I believe it stands out from the crowd, and could be propped up against a wall when not in use.

    Joe Valverde has uploaded 13 CAD models & has left 46 comments.
  • Joe Valverde

    Joe Valverde 8 months ago

    I particuallylike,the x-PAD for its unique colour scheme,it wouldcertainlyattract new users.

    I also like Johnathons clamp with the multiple foam bars, provides great support.

    Goodluck all

    Joe Valverde has uploaded 13 CAD models & has left 46 comments.
  • Ian M

    Ian M 8 months ago

    Well done to all the finalists. There are two that stand out for me, the X-Pad and the Butterfly design. Both of these are modern clean looking attachments and will perform the job they are designed for. The X-Pad looks like its been designed for the 21st century Gym, a refreshingly modern take of a functional attachment. As gyms try and attract new clients then this is sure to impress.
    Well done again and best luck to all the finalists.

    Ian M has uploaded 8 CAD models & has left 8 comments.
  • Armin Yousefi Kanani

    Armin Yousefi Kanani 8 months ago

    Calf Crusher Strap" by bryan.morris-1 and RV Donkey Calf Raise Attachment by ricky-29

    Armin Yousefi Kanani has uploaded 134 CAD models & has left 868 comments.
  • Armin Yousefi Kanani

    Armin Yousefi Kanani 8 months ago

    Armin Yousefi Kanani has uploaded 134 CAD models & has left 868 comments.
  • Christos Georgoulas

    Christos Georgoulas 8 months ago

    Congratulations to all the finalist.
    My top three entries without specific order:
    https://grabcad.com/library/donkey-calf-razor-v
    https://grabcad.com/library/donkey-calf-raise-attachment-v
    https://grabcad.com/library/donkeycalfraise-concept-1-v

    I would like to make some adjustments to my design, move the neck at the center of the surface under the clamp to minimise displacement,shorten the neck to minimise movement during the exercise and give more wall thickness to some specific areas.
    I think those are the changes i would make during the product development.

    Good luck to all finalists

    Christos Georgoulas has uploaded 23 CAD models & has left 86 comments.
  • Sara Sigel

    Sara Sigel 8 months ago

    Look for final winners to be posted next week. Sorry for the delay!

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • Jonathan

    Jonathan 8 months ago

    This one will be interesting! thanks Sara.

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Erika

    Erika 7 months ago

    I like so much this model: RV Donkey Calf Raise Attachment .

    I think that is beautiful strong and functionally.

    Erika has uploaded 5 CAD models & has left 1 comments.
  • jamie

    jamie 7 months ago

    when are results going to be released?

    jamie has uploaded 19 CAD models & has left 73 comments.
  • Bryan Morris

    Bryan Morris 7 months ago

    Everyone did a great job and the finalists were well deserved. I only hope that safety is a main concern with the final product. The donkey calf raise is a great exercise to increase calf strength but can be dangerous is done incorrectly. I hope to see the end result on the shelves one day!

    Bryan Morris has uploaded 48 CAD models & has left 308 comments.
  • Sara Sigel

    Sara Sigel 7 months ago

    Winners are announced! Again, we apologize for the delay.
    http://grabcad.com/challenges/donkey-calf-raise-attachment-challenge/results
    .
    Thank you to all participants! 3D Technology is really excited about the solutions you created and found your feedback throughout the Challenge to be really helpful in increasing focus on safety and comfort. You can expect them to pick and pull the best features from all of the winners as they pursue this product. Great work GrabCADrs!

    Sara Sigel has uploaded 1 CAD models & has left 1957 comments.
  • Jonathan

    Jonathan 7 months ago

    Congrats to top three! Great challenge!

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
  • Tommy Mueller

    Tommy Mueller 7 months ago

    Workout people's calves everywhere are gonna get ripped with muscle!
    Congrats you guys!
    Ricky
    paultahar
    Stefan Gales

    Tommy Mueller has uploaded 148 CAD models & has left 2095 comments.
  • jamie

    jamie 7 months ago

    well done to the winners - one of the better challenges on GC

    jamie has uploaded 19 CAD models & has left 73 comments.
  • Stefan Gales

    Stefan Gales 7 months ago

    For me it was an honor to be a finalist.
    Thank you GrabCAD. Thank you 3D Technology.
    Thank you GrabCADrs.

    Stefan Gales has uploaded 49 CAD models & has left 131 comments.
  • Fabian Jones

    Fabian Jones 7 months ago

    Thank you to the winners and everyone who participated in the Donkey Calf Raise Attachment Challenge. I got more than I ever could have bargained for. Trying to pick a winner was a very difficult task. There were so many great designs. Now let’s go get some defined calves.

    Fabian Jones
    3D Technology

    Fabian Jones has uploaded 4 CAD models & has left 23 comments.
  • Jonald Trump

    Jonald Trump 7 months ago

    Congratulations to the winners, nice work.

    Jonald Trump has uploaded 3 CAD models & has left 17 comments.
  • Anderl

    Anderl 7 months ago

    My congratulations to all the winners!!

    Anderl has uploaded 12 CAD models & has left 210 comments.
  • Christos Georgoulas

    Christos Georgoulas 7 months ago

    Congratulation to the winners. I really enjoyed this challenge.

    Christos Georgoulas has uploaded 23 CAD models & has left 86 comments.
  • Jonathan

    Jonathan 7 months ago

    Lol. Must have missed the e-mail for this...obviously congratulations to all the finalists! Thank you to Fabian and 3D tech for the opportunity!

    Jonathan has uploaded 160 CAD models & has left 1679 comments.
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