I changed my mk8 hotend and mk8 feeder into a e3D v6 hotend and mk9 material feeder. You can buy e3D v6 hotend on eBay, Amazon, Gearbest... from $ 10 to  $20. You can download for free the mk9 material feeder and print it. The 3D printer is avelible for $154 on eBay. It is a Chinese CTC Prusa i3 Pro B 3D printer kit. I buyed it from my  money I earned in school practice. 

Original CTC i3 Pro B 3D printer kit:

https://www.ebay.com/itm/2018-A8-3D-Printer-DIY-i3-Upgradest-High-Precision-Reprap-3D-Desktop-Drucker-DHL/253370272531?hash=item3afe0b8b13:g:uqsAAOSws0JaXEa5

Material:

PRINTING PARTS

All 3D printed parts are printed on Ultimaker 2+ 3D printer. You load the 3D models into your slicer for 3D printing and chose printing parameters All 3D printed parts are printed with PLA on 0.1 mm layer high, 0.4 mm nozzle, 210C on hetend, 60C on heatbed, 30% - 50% infill and with supports. The material feeder motor holder (blue part) is printed with 100% infill and no supports.

You can download all 3D models for free here: 

https://www.thingiverse.com/thing:2781938


STEP 1

Instal the e3D v6 hotend on the printer with the white 3D printed part (e3D v6 mount) using 4x M3 nuts, 4x M3 bolts. Use 2x M3 nuts and bolts to mount the e3D v6 mount to the X carrige and 2x M3 nuts and bolts to mount the hotend.

Then instal the filament cooling fan with 1x M3 bolt and 1x M3 nut on the white 3D prined part and then instal the dark green 3D printed fan duct with 2x self-tapping bolts.

The brown mask is printed with 0.3mm layer high with 20% infill and with wood PLA.

2. STEP

Drill 2x 4mm holes for the motor feeder mount, and 1x 8mm hole for the bowden tube on the printer frame.

3. STEP

Mount the material feeder on the motor with 2x M3 bolts, 1x spring, 1x bearing from the old material feeder and 1x M3 nut and bolts for bearing.

STEP 4

Mount the motor feeder mount on the printer frame with 2x M3 nuts and bolts.

STEP 5

Use a thin sheat of paper to calibrate the heatbed on you 3D printer by screwing or unscrewing the nut on your heatbed. Move the paper and twist the nut untill you feel a bit of resistance. Repeat for all 4 cornes.

RESULTS:

The red 3D printed fish fossil is printed with the old hotend and feeder - it has strings, it is not flexible and layers are desperate.

Fish fossil keychain
Fish fossil keychain
The brown fish fossil is much better, it has no strings, it is flexible and the layers are perfect.

Evrything is printed with PLA (210C), 0.4mm nozzle, 0.2mm layer hight and with 20% infill.

PLUS+

The details are looking very good on this golden 3D printed dragon.

Adalinda: The Singing Serpent

Adalinda: The Singing Serpent

Labyrinth Gift Box

Labyrinth gift box

Marvin and Frog