I have several rar files but my program will only read stl. files is there a way i can convert them ?
1. you need download and "unrar" (or open) this rar file with 7zip or winrar software (you can find this on the web free, type "7zip download or winrar download" and install it)
2. your original rar file you must open with this rar opener and "unrar it"
3. after unrar you have one or more files and there would be stl file too - now you can stl open with your program