While I was building GoonieBox, I needed more than just a 3d Modeled version of the part.
I needed that actual part, but I didn't necessarily want to buy the part because I wasn't sure if it would work.
Well... these guys (servocity) give you the .stp file so that you can print out the part you need for a dry fit test.
For example check this part out. I used this throughout GOONIE for a ton of different motor assemblies.
Printed they were strong enough to do the job till I got the actual parts in.
Here is where to find the .stp file!
Now just take the .stp file and print it out. I use my trusty old Makerbot Replicator 1.
It has over 500 hours of print time, this thing is a beast!
I did this for all of the mechanical parts which eventually ended up being the metal versions from servo city.
Here is a full blown version of the innards of Gooniebox. Take a look at all the metal parts.
If it weren't for servo city's free .stp files, it would have cost me a fortune to make goonie.
This is a huge service they provide, highly recommend!!