MakerBot: Parts

Some details on different parts of the MakerBot.

Plastruder MK4

Suggested spares

• It is suggested to print spare Insulator Retainer(s) ahead of it breaking.
• Heat barrier: It is suggested to have a spare of this; or a plan to change it if it breaks. (Thingiverse has a few alternate versions)

Idler Wheel

The original idler wheel is made from acrylic and (somewhat) prone to cracking.
The dimensions are:
Outer diameter = 41 mm = 1.614in
Inner diameter = 21.9 mm = 0.862in
Thickness = 3.1750 mm = 1/8 in

Insulator Retainer

The original is made from acrylic and prone to breaking (often happens when tightening the screws).
There is a version of this at thingiverse for download local copy

Heat barrier

The original barrier is made from PTFE.
Some other suggestions exists over at thingiverse;

• All steel hot end for Makerbot by lampmaker (made from nuts and washers)
• no-PTFE brass hot-end by peter_ (made from aluminum)

608 Idler Pulley

It is possible to print your own. This version requires a 608 ball bearing to be inserted.
There is a version of this at thingiverse for download local copy