SoliForum - 3D Printing Community — I melted My Hot End

Re: I melted My Hot End

null@example.com (Mic) — Tue, 25 Jun 2013 13:20:09 +0000

Sorry for the long departure. I haven't had much time lately with work and gardening to.
I'm waiting on a resistor still. I can use the machine but it fluctuates the temp to drastically. So I picked one up just waiting for it to ship.
What little I have done Im not sure the Black RTV is the best thing to glue the bolt piece into the hot end. Its supposed to be for high temp but gets a bit soft. Maybe thats why it works in engines, swells and plugs the gap?

Re: I melted My Hot End

null@example.com (2n2r5) — Sun, 19 May 2013 00:14:00 +0000

Mic wrote:

Honestly I am thinking about moving the extruder to the frame and using a custom hot end. I have a couple of heat sinks I can melt down to pour a body from.

That's what I am going to do too. But I am going to use commercially available hot ends.

http://www.soliforum.com/topic/2428/yet … den-style/

adrian already has a pretty good design printed out.

Re: I melted My Hot End

null@example.com (Mic) — Sat, 18 May 2013 23:58:36 +0000

I stripped one and have a piece of bare copper wire twisted around the bolt under the nut which after this time coming off probably won't go back on.

Just not meant to be worked in and out so many times.

Honestly I am thinking about moving the extruder to the frame and using a custom hot end. I have a couple of heat sinks I can melt down to pour a body from.

I like the brass part of it though.

Re: I melted My Hot End

null@example.com (2n2r5) — Sat, 18 May 2013 23:35:38 +0000

lol... that is what inspired me to switch to the MK4 myself. What is with those encapsulated M3 cap screws that hold the wood on. Tell me that isn't a PIA!.

I melted My Hot End

null@example.com (Mic) — Sat, 18 May 2013 23:23:21 +0000

It got clogged because a few to many times letting ABS cook in it. So I took it apart and put it back together. Well the kapton tape holding the little sensor crapped out. Brown goo rolling out of the black piece. Well, I knew that was no good so I stripped it back down and decided I was going to have to replace that white piece. I thought about epoxy but then I saw some old machine screws I have in a can. The screw is almost the perfect size so I cut a piece long enough to go all the way down to the brass and drilled a hole thru it. Cleaned up the ends and tapered the top end.
I slid it 3/4 of the way in and then put some black RTV on the last few threads and pushed it in then let it sit over night.

Only trouble I have had with it is my hole is a bit to big, didn't have the right size bit.

I thought heat might be an issue but it hasn't so far.

I can say one thing interesting that has come out of this, I"m putting on the MK4 Jigsaw extruder with the quick release. About to start that in just a minute.