heated bed

y-axis support for the heated bed:

made of 5 mm aluminum:

I used structured silicon layers with kapton inbetween to make some good insulation.

I removed some of the insulation to screw the resistors. I have 4x 4.7Ohm in parralel at 12 V and 2x 1 Ohm in parallel at 5V. So I have around 10 amps on each Voltage and more then 150 Watts heating power.

Glueing the temperature sensor in the middle. Adding more insulation layers.

 Top View:

Here you can also see the temperature controller. It automatically finds the best parameters for PID which saves a lot of time. Less work, more coffee.

modifying the z-stage to hold the extruder

introducing aluminum parts

I wanted to change several extruder parts from ABS to aluminum for longer lifetime.

Starting Point

Some gerneral impressions of my starting point:

 Notice the milling motor is still on top:

z-stage:

x-stage:

 y-stage:

 Stepper testing with generation 6 electronics. With 12 Volt the steppers start to loose steps at around 230 mm/min. This far too slow. I expected much more with the 2 mm inclinded spindle. With 24 Volt I can savely read around 300 mm/min. Still dead slow. I will use is as a starting point and will also layout my extruder for 24 Volt and later use better stepper motors.

Getting started with the extruder

Hi everybody.

I received all my parts by now to modify a PCB CNC Milling Maschine I found on chinese taobao.com. LINK TO TAOBAO

Here I would like to keep you up to date on the modification to a 3D printer.

After returning to Germany one month ago I started modifying the CNC machine and I also received a repraped geared extruder:

The motor needed to be processed so that it could hold the gear.

So far so good. All parts are cleaned and the extruder runs smoothly.