paste extruder for delta printer

this is an upgrade for the micromake delta D1 printer or any other kossel type delta printers.
this extruder allows you to print with any kind of paste you can put into a syringe such as chocolate, mashed potato, ceramics or whatever you want.
here is a test video:
https://youtu.be/QE4aIuJHn1A

to make one of this you will need:
1 flat stepper motor 42BY48L-53
https://www.ebay.com/itm/42BY48L-53-Stepper-motor/201982848742?hash=item2f071daee6:g:t~4AAOSwiA9ZY0SS&frcectupt=true

60 ml syringes
https://www.ebay.com/itm/1x-60-150ml-Large-Plastic-Hydroponics-Nutrient-Disposable-Measuring-Syringe-Tool-/223262476184?var=&hash=item0

1/4" threaded rod cut to 120 mm long and some nuts.

1x aluminum tube OD 35 mm ID 32 mm 100 mm long

1x silicon heating pad
https://www.ebay.com/itm/Silicone-Rubber-Heating-Pad-Heater-Mat-For-Oil-Tank-3D-Printer-Etc-Heated-12V-DC-/163643069458?hash=item2619e31412

2x thrust bearings 15X28X9
https://www.ebay.com/itm/15mm-ID-x-28mm-OD-x-9mm-Thi