Attempting to print my first Mendel piece

After printing the K block (see my previous post) with the RepStrap, I immediately went ahead attempting to print my first Mendel part. I ambitiously chose the pinch-wheel-bracket-NEMA17_604-bearing_1off.stl file, which is the green part of the following picture:

The green part is what I need to print

I’ve had varying amounts of success and failure. I have several aborted attempts. Since these were aborted, most of these are just the bottom part of the above piece:

You leave the thing alone for one minute...

Multiple levels of failure

Almost good enough!

This was a very fast print, but it almost wrecked the extruder

The bottom of one of the failures before clearing away the raft

The one on the right is closest. I took a spare ruined PTFE rod and stuck it in the piece on the left (and then fed a piece of ABS filament through it) for illustration purposes.

So, the above one on the right is the closest I’ve come to a functional piece. Worst case, I’d drill through the top, sand off the rough parts, and make it work, but it’d feel better to print it correctly. Clearly I need to do some kind of configuration for this device that I haven’t done (I thought we’d calibrated it but I’ll try again).

Video: