Tag Archives: azteeg x3

Ok, I give up on the QU-BD extruder’s …

2013-08-30 17.54.08So in an effort to actually get my ord bot up and running I’ve been putting in some hours in the garage.  I’ve been just twisting wires and taping them and trying to get things running, then when I know how everything will function I’ll tidy up.

In this effort I was previously attempting to run a dual QU-BD setup.  Someone asked me why I chose to go QU-BD despite all the terrible reviews.  Well I had a chance to think about it.  The QU-BD was built off of a Makerbot reference design, and the version I bought was version 9.  My theory was that a) they’ve probably worked out the bugs by now.  and b) people on the internet like to complain.

Well I was wrong.  After spending countless hours fiddling with it, I just can’t seem to get it to extrude consistently (I’m not even trying to print with it at this point, just extrude right).  I’ve spent so many hours tweaking this thing that I just need to throw it out of the window.  Now I have read tons of fixes for it, people making parts like spring loaded tensioners, etc.  I’m just going to scrap it for parts and get something that works.

2013-08-30 15.29.27So what to get ?  First off, I’ve heard so much good praise about the J-Head hot end.  So I went to order a one from hotends.com but he was out of stock.  So I ordered one off of ebay only to read a review afterwards about sub-par quality of the chinese J-Head clones.  So while I was waiting on my J-Head to ship from china, I checked hotends.com again and they were in stock!  So I ordered one from hotends.com and it actually arrived before the one from china.

 

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For an extruder I bought the EZStruder from seemecnc.com.  Again I’ve heard good things about it.
Looking a the quality of the EZStruder, the molded plastic parts looked like the were going to work perfectly.  Everything was just the right fit and tolerance.s, and it fits perfectly to a J-Head nozzle.  I stole the stepper off of one of my QU-BD extruders instead of buying a new one.  Also I decided to just focus on a single head design and when everything is happy I’ll order another EZStruder and see about getting the chinese J-Head working with it in a dual design.  For now I want to just get the ball rolling.

So now the J-Head shipped with a power resistor to heat it.  I actually have a heater cartridge I got off ebay that I think looks nicer, plus it means I don’t need to find any high temp wire to hook up to it.  So I went with the heater cartridge.

 

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The only issue I had with the heater cartridge is it doesn’t seem to fit real snug.  The QU-BD design had a screw tensioner you could put on the cartridge to make it a nice snug fit.  The J-Head site recommends using some compound for like muffler holes.  I decided to improvise by pulling tiny strands of stranded wire through with it to give it a nice snug fit.

2013-08-30 16.06.362013-08-30 16.33.26To mount it, I found a bracket made by bwevans on the ord-bot forums (link here).  I printed it out on an old thing-o-matic at my hackerspace.  The bracket fit nice, it uses holes already there for the belt attachment and I just had to find some screws that fit.

 

Some other pics are posted below.  So far I can tell you this setup works perfectly.  Everything fits together real nice, the filament is nice and sturdy and it seems to be able to extrude really fast and hasn’t slipped once.

Ord bot update — First axis movement

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So I finally made some time late at night to work on my ord bot.  First thing I did was try to true up some of the brackets, make sure everything is straight and tight.

 

 

 

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Next I went ahead and soldered the stepper headers onto the azteeg x3, I decided this look was cleaner than going with the screw terminal approach.

 

 

 

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Finally it was time to wire up the power supply.  I just chopped up an old IEC cable and screwed the terminals down.

 

 

 

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A quick power on test of the azteeg.

 

 

 

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A little bit of wire twisting, some electrical tape and I loaded up Marlin firmware sketch, tweaked the values a little to match the azteeg x3.  From here I ran into an issue where the board went into failsafe block mode because I don’t have any of the thermocouples hooked up it thought it was frying its self, so I disabled those in the firmware.  Try #2, I was getting steps, but not good steps.  I adjusted the stepper current using a meter and a small screwdriver on the pots, but still odd movement.  I finally realized that I hadn’t put any jumpers on the microstepping selector and was doing full steps.  After setting that it was moving like butter!
Here is a video of me just playing with the motor back and forth.

3d printer parts are in!

I always feel like its Christmas time when I get parts in the mail.  So I got the power supply, the extruder, the stepper controller, drivers, and a bunch of other stuff that I may or may not need.  I’ll post more pics and comments as I start to put it together, here’s some pics of what I got.

More 3D Printer parts ordered

I ordered a bunch of stuff from Panucatt Devices, namely the Azteeg X3 controller, Helios 200 Heat bed, and a viki lcd just for fun.  I also went with the dual extruders from QU-BD, despite what I’ve read on the internet.  There are a lot of unhappy people with this extruder, i’ll try it, and if it doesn’t work out i’ll pick up something else.  I still need a power supply, I’m not sure why people are moving away from using ATX power supplies, maybe for size?