He everyone,

I don't remember if someone has already started a similar thread here,
but I'm looking for a web site where it is possible to download for free,
mechanical parts in STEP and/or 3DM format.

I found this good one http://www.mcmaster.com/

Do you know a better place ?

Thanks and have a nice day.

P.S last minute....Found also this https://www.tracepartsonline.net
Its library seems to be very huge...

- Marco (mkdm)