Essential Thing-O-Matic modifications

Last year i bought a Thing-O-Matic 3D-Printer so I could print off custom plastic parts and other things but I had a few problems with its default configuration. So ive come up with a list of modifications that improved my print-quality and or speed.

Replace the standard Y axis motor with something with a little more grunt. I had various problems with the motor slipping and a larger motor fixed this.

Y axis motor mod

Here I replaced the NEMA 17 motor with a larger NEMA 17 motor with the exact same steps per rotation. Then you can increase the amps of the motor without worrying about it heating up. I got mine from here: 62 Oz-in Nema 17 Stepper Motor

Increase the feedrate to 40mm/s. If you are using the better Y axis like i am you can get away with a much faster feed rate.

Decrease the perimeter feedrate ratio to 0.6. So that the outside of objects are still clean. Interior supports will still print at full speed but the outside most shell will print at 0.6 feed rate. This is a good balance between speed and quality.

Feed Rate

Do some preventative maintenance by printing and installing a Y axis bracket to reduce tension on the bolt. I used this one: Y-Axis Idler Support Bracket

Use the Heated Build Platform. The Automatic Build Platform can work but its pretty rotten by default. You can do a bunch of modifications to make it work but unless you use its features you are better off just using the Heated build platform instead

Don’t use a raft as they are messy and almost never give good results. Print raft-less onto a heated platform

Change the Heated Build Platform Temperature to 120C for ABS by modifying the Gcode settings. The below line shows the command that sets the temp.

HBP temp

You can either change this line for every print you make manually or change it permanently by editing the header file located in “ReplicatorG\machines\thingomatic\start+HBP+Stepstruder.gcode”. Depending on what machine you setup with ReplicatorG. If you print using PLA its recommended lowering the temp to 55C.

Lubricate the Belts and shafts. This will reduce the friction on the axis, not by massive amounts but it does help.