Just installed the new Ubis metal hotend on my #printrbot - very, very nice. Seems to actually give crisper deposition and better first layer adhesion! Now… does anybody know whether there’s a cheap eBay source for nozzles? Do Ultimaker or J-head ones work, for example:
Was thinking of getting the metal hotend for my PrintrBot, but thinking I might just wait and upgrade the whole thing to a Metal Simple sometime this year.
I don’t think I’m gonna go Metal - I’ve got a no-sag Y arm mod halfway built and will install it when I get a chance, and I’ve got a heated bed that I keep meaning to install. I kind of prefer my FrankenBot at this point… 
@Tom_Nardi what printer do you currently have? Just curious as the switch might not be worthwhile.
E3d tips should work. Waiting on my tips with various hole sizes.
@Brook_Drumm Thanks for that - I see you’re out of stock. (Plus, those are the old style tips, right?)
@Brook_Drumm Well, that’s a bit of a disappointment - my new hot end is jammed up in the body. I removed the tip, but still can’t extrude through it. Followed instructions regarding fan activation and retraction. What’s up with that?
@Brook_Drumm Never mind - cleared it by bringing it up to 250º. Nice having an indestructible hot end…
Good job!
Actually, @Brook_Drumm , the instructions regarding retraction have me wondering: what’s the proper technique to switch filament now? I usually pull/retract the existing filament out of the hot end, but should I stop doing that with the new one?
To switch , it’s fine, you just don’t want retracted filament to sit in the cold end for extended time. If molten plastic cools and sticks to the sides, it could jam.
Got it, thanks!