I'm building my own 3D printer (custom design, made by me and cut using a water cutting machine) but I have always had problems with the hotend clogging.
I have had four hotends:
- a J-Head;
- a full metal;
- a full metal made by me and;
- my current hotend which is just a block of aluminium with a plaster cold-end 100% homemade with no precision at all.
Believe it or not, this hotend is the only one that has finished a whole print (about 40 minutes), all of the others, with or without fans, haven't managed to finish one!
Well... this hotend has a 1.5mm hole so I guess that that's why it can print.
The problem with all of the others was that the 1.75mm PLA that I'm using clogged the hotend after two minutes.
Now I would like to buy a new, more precise, hotend. I'm using a Bowden extruder, can you suggest a good hotend?
This is my printer: