Monthly Archives: March 2011

Hot End

Testing the Heating Element

Hot End

Crimping the Thermistor

0. Here's one I crimped earlier

0. Here's one I crimped earlier

1. Twist wire with thermistor strand

1. Twist wire with thermistor strand

2. Fold to size of crimp

2. Fold to size of crimp

3. Push crimp over, then press together with pliers (or crimping tool if you have one)

3. Push crimp over, then press together with pliers (or crimping tool if you have one)

4. Add heatshrink

4. Add heatshrink

5. After applying heat from a lighter

5. After applying heat from a lighter

Electronics

Wiring Up

Electronics

Endstops

Frame

Print Plate

Extruder Frame

Print Head

I’m not too happy about the position of the extruder on the print head.  The motor rubs against the X axis belt when mounted in one direction, and the large cog rubs the belt clamp in the other.

Also, the two bearings that hold the hobbled bolt, in the extruder, are not perfectly parallel, and this causes the bolt to be slightly stiff when turning.  We shall see if this causes problems and needs to be revisited.

Extruder

Building the Extruder

Frame

Z Axis

Transmission

Belt and Pulley Problem

It seems that there is a problem with the teeth of the belt not meshing well with the pulley. Every few rotations the belt rides up on a tooth and causes the movement to stutter.  Hmm, to the forums I think.

[ Edit @ 21.03.11: After hooking up the motors and doing some testing it seems that this meshing problem doesn’t cause the plate or head to jump.  Perhaps the tension from the motor doesn’t cause the problem whereas it does when moving by hand?  Further tests to be done! ]
Frame

Building the X axis