EzGroove Hot End Mount Kit + HotEnds.com MK V-BV J-Head

[JohnStack]

I bought the EZGroove Hot End Mount Kit after buying a J-Head from http://www.HotEnds.com and then was scratching my head about how to get the brass bowden tube end and filament feeding into it.

I ended up taking the old Steve's Extruder bowden fitting (the one with the notches) and using it. I didn't have the right standoff's but I assume this might work...looks like @SeeMeCNC can get rid of some of their fittings stock...

[Edit: I used some filament to keep the head straight with the bowden "extension" - seemed to work.]

(I thought I would put this up before I let you know how it worked. @Foshon, now I'm paranoid, I'm not sure if anyone else tried and posted this - I didn't find a posting anywhere...lol)

[foshon]

I think the only issue you may have is the filament kinking and jamming along the length of the support. I bought a few from this ebay listing:

http://www.ebay.com/itm/RepRap-3D-Print ... 19ddf2a7c9


I think the only reason they work is that the bowden push fit is different. It allows the PTFE tube to slide completely through to the bottom of the nozzle. When I had jams with a j-head, they seemed to be caused by filament kinking in the space between the original push fit and the hollow hex screw. I used Richrap's mount for mounting the single j-head to the effector. It can be be found here:

http://www.thingiverse.com/thing:60539

I drilled the hole out to the size of the thread valley. I soaked it in acetone for a few seconds and then screwed the push fit in until it bottomed out. After a few minutes the acetone dries and the plastic is essentially threaded. I still have one made up and if my dual extruder adventure fails I will be going back to it.

[JohnStack]

I see what you're saying.

I saw this part earlier but didn't download it to see the bottom. I like your suggestion.

Clearly I'm not done...LOL

[JohnStack]

I still like the idea of using that threaded aluminum fitting - so I made this drawing of a tube to fit over the nib of the J-head and the aluminum fitting for the brass fitting of the bowden tube. This only requires one slight mod - which is to run a screw through the top piece of melamine to catch the notch of the aluminum fitting so that it doesn't turn.

Might be cludgy... I'll also try the other stl.

[cambo3d]

hey john why do this, when you already have an ezgroove mount kit?

edit: oh nevermind ic you needed the bowden adapter to fit it. hhmmmm

I make these for sale if your interested.. http://forum.seemecnc.com/download/file ... &mode=view however I've not tested it with the original jheads, because it was modeled around the ED3 I was using but the ED3 is Jhead type so it should still work...its already drilled and tapped for the rostock bowden adapter http://forum.seemecnc.com/download/file ... &mode=view and http://forum.seemecnc.com/download/file ... &mode=view

[JohnStack]

I spent the $9 to see if it might be useful. I can think of 100 variations to this and @foshon's links are good options too.

If your existing head is screwed up and you don't want another, the reality is that you need a working printer - or a friend to print something for you; or alternatively, parts need to be added to this kit to make it support at least a single basic J-Head. Those parts are some kind of threaded shaft to fit over the top of a standard J-Head nib. (or at least that's what I'm calling it.) The shaft should accept the Rostock brass fitting from the bowden tub.

[EDIT: @Cambo3D we were posting at the same time. Is that aluminum piece threaded to accept the brass fitting?]

[cambo3d]

[EDIT: @Cambo3D we were posting at the same time. Is that aluminum piece threaded to accept the brass fitting?]

yes it is