qu-bd Universal 3D Printer Extruder on Kickstarter

[automationtech]

Just an extruder update, but they have sent 400 of em as of EOD yesterday and are supposedly packing more all weekend for shipping. Those of you who made it in on the Kickstarter should start seeing extruders soon.

-Mike

Hi Mike

when do you ship my order more than 20 pcs ? pls update

http://www.automationtechnologiesinc.co ... controller

[mikegrundvig]

Ha ha, I'm in on way related to QU-BD, I just posted that comment as they've updated their Kickstarter page with those details. I have no idea when yours will ship - I'm waiting on mine. I was early in the beginning after their "second" batch ordered opened up.

-Mike

[orcinus]

Most ignorant statement ever...

Sarcasm and ignorance are synonyms?
That's news to me

On a more relevant note - anyone received their qu-bd yet?

[mattrsch]

I got mine about a week ago. I haven't had great luck with it. I can get pla to go through for a while but I haven't finished a print without it stripping out the filament yet. I have had no luck with ABS whatsoever. Is anyone else doing any better?

[orcinus]

That sounds like it's having serious thermal barrier issues.
Is the filament deformed/bloated at the hot-end barrel entrance when it strips?

[automationtech]

[quote="orcinus"][quote="gazorp"]
Most ignorant statement ever...[/quote}

I ordered more than 20 pcs, I have sent email to qu-bd., but no response. I do not know what is going on?

http://www.automationtechnologiesinc.co ... controller

[orcinus]

There's a thread on the reliability issues on their forum:
http://www.fabric8r.com/forums/showthre ... 4-days-and

Suggestions so far come down to "switch to 8x microstepping" and "cool your driver better".
If it really is the drive gear design / manufacture that's been botched, that's going to be a fiasco.

One of the posts suggests the teeth haven't been resharpened or otherwise refinished after cutting the groove, requiring absurd amounts of pressure from the plunger to get a solid bite. That, combined with the plunger design, which is completely static with no means to compensate for variations in filament diameter, is worrying...

[mattrsch]

Thanks for that. It is good go have some suggestions to try. My motor was getting pretty warm.

[Nick Brawne]

I received mine on Saturday, and the thing I noticed was the sharp edges on the static plunger / set screw. My first thought was to try and sand and then buff the edge off, but that still will not accomodate the inevitable vagaries in filament diameter. I am now thinking that I will add a steel ball and spring or rubber 'O'ring, steel washer and ball.

[movlw]

I haven't got the qu-bd but I am using http://www.thingiverse.com/thing:21686 with the original MK7-extruder and it made a world of difference!