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Author Topic: Kossel Build  (Read 8834 times)

James

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Kossel Build
« on: January 20, 2017, 09:06:44 PM »
Hi all. I recently pulled the trigger on a new printer kit. It's a Chinese Kossel w/ linear guides. The brand name is 'anycubic'. At $312.00 with expedited shipping it was too good a deal to pass up. I really like the idea of the linear rails, less parts to assemble and keep in working order and I imagine it's less noisy as well. My little PrintrBot Simple is just so damn tiny. I have a working build area of like 100x80x85mm with it... it's hard to build anything much in an area that small. It's very limiting so I am very much looking forward to a larger printer, plus I have always loved delta printers.

www.ebay.com/itm/Anycubic-Self-assembly-Kossel-3D-Printer-Linear-Pulley-Version-DIY-Kit-Delta-/281881910089

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Anyways, when it arrives I plan to document the build here.
« Last Edit: January 20, 2017, 09:43:45 PM by Yahmez »

James

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Re: Kossel Build
« Reply #1 on: January 25, 2017, 08:45:36 PM »
Well it came in the mail today. I can hardly believe it went halfway around the world so fast. 4 days! Never had anything ship from China so fast. I'm impressed by how well everything was packed, it all seems to be in good shape and they sent me a heated bed and a big 12V 25A power supply for free. Looking through it all, the only part I'm skeptical about is the hot end, it seems cheap. We'll see how it goes, I hope to work on it this weekend.

jinx

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Re: Kossel Build
« Reply #2 on: January 26, 2017, 03:03:34 AM »
 hotend  a V5 it hard to make out from the pic " difference is the cold end  core is stepped while the v6 is cone", unscrew the the  coldend of the  heatbreak you looking for some ptfe liner if its there you fine else you screwed!!! Chinese dont polish the heatbreak and that can lead to jams
 
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James

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Re: Kossel Build
« Reply #3 on: January 26, 2017, 06:24:32 AM »
Ah well that's good. It's stepped and has the PTFE liner. The cold end is aluminum though, using it usually SS?

jinx

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Re: Kossel Build
« Reply #4 on: January 26, 2017, 06:40:01 AM »
 cold end is aluminum though"
 yea that right if it was SS it hold on to the heat, the heatbreak alway SS warp some tape around the  heaterblock as there nothing holding the thermistor in place apart from where the leads are taped.

be a good hotend  on the delta the way its mounted the size" length" no big deal on a delts". thing I test how easy fila loads if it catches anywhere like between the cold end and and heatbreak some time there a small lip the fila catches , put a chamfer on the inner wall of the liner leading in  and straighten up the fila  with a spear tip when loading 
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jinx

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Re: Kossel Build
« Reply #5 on: January 28, 2017, 04:54:57 AM »
came across this http://www.thingiverse.com/thing:2068263 i prefer the spool mounted on top looks cleaner i think , but more importantly it clears the corners beams so you can add corners which will let you make an enclosure  for the day you move onto ABS.
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Ladvien

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Re: Kossel Build
« Reply #6 on: January 29, 2017, 04:45:37 PM »
I agree with Jinx on the spool mount.  I've tried a few different mounts, but kept binding.  Finally built the one Jinx referenced and love it.  Haven't had a bind yet.

Hooray on more deltas! :)

James

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Re: Kossel Build
« Reply #7 on: January 30, 2017, 09:28:54 AM »
Thanks for the link jinx. I like it. Not sure about the hard drive bearing but I have some thrust bearings that should do the trick. I'll have to give something similar a go. I suppose I'd have to relocate my extruder though.

James

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Re: Kossel Build
« Reply #8 on: January 30, 2017, 09:40:31 AM »
Well so much for a build log, I put her together Saturday in about 8 hours and didn't take one damn picture. But I have to say, I am very impressed with the kit. Everything went together perfectly and the instructions were great. I had zero problems with assembly but this being my first Delta, I was lost when it came to getting the bed level and ready to print. I got the endstops adjusted and had an issue with the bed being convex. Went mad adjusting the smooth rod offset and it seemingly having no effect, until I realized I had to issue a m502 command to load the new values. With that sorted I was able to get it printing late last night. Still need to add the heated bed after I don't some new mounts for it and tune it to print dimensionally accurate but I'm making progress.

ZeroMax

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Re: Kossel Build
« Reply #9 on: January 30, 2017, 10:16:39 PM »
Looks like you could print a coffee can.  Or anything you could fit inside a coffee can.  It would be interesting to see someone print hundreds of thousands of coffee grounds.  Maybe you could do that with the printrbot!
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James

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Re: Kossel Build
« Reply #10 on: January 31, 2017, 09:03:51 PM »
lol! Craving some caffeine Max?

James

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Re: Kossel Build
« Reply #11 on: January 31, 2017, 09:24:20 PM »
Well, day 3 of printing and I broke something already. :/
I was printing a new set of bed clips to accommodate the heated bed which is not installed yet and the print went to hell.

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After removing the part from the bed I grabbed the effector to test for rigidity and there was a lot of free play. Then I realized that one of the ball ends of the diagonal rod on the z pillar had pulled out of the carbon fiber tube. I removed both rods on the z pillar to inspect. The end of the one that pulled loose seemingly had been glued with hot glue. At least that was the consistency of the remaining epoxy. All the other joints on the other arms were hard and solid so I am guessing that the epoxy on the end that gave loose was not mixed properly at a 1:1 ratio with the hardener. So I cleaned up the residual gummy epoxy and reset the joint using the other z arm as a jig.

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Yea, so waiting for that to fully cure before playing with it more. Here was my first print after leveling the bed...

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So anyways, I hope to get the heated bed installed soon along with the beefy 25A power supply. Then it's time to level the bed again and maybe try some calibration prints to tune her a bit.

ZeroMax

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Re: Kossel Build
« Reply #12 on: January 31, 2017, 09:53:46 PM »
Nice looking vase (right?)! Banana for scale?
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James

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Re: Kossel Build
« Reply #13 on: January 31, 2017, 09:59:54 PM »
Thanks. A banana would dwarf it as it is scaled down and only 3" tall. Just a little test.

James

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Re: Kossel Build
« Reply #14 on: October 18, 2017, 09:51:25 AM »
Well, a lot of time has passed and I never updated this thread with my upgrades. I did end up adding a bigger PSU (12V 25A) for the printer electronics as well as the heated bed. I don't really use the heated bed a lot because I only print in PLA but it is nice for prints that seem to want to lift from the bed. In order to mount the PSU under the printer I needed feet to raise it up and make room. I posted these before but I made designed feet that hold tennis balls and provide a nice way to lower the sounds coming from the printer. Also designed a power inlet and switch, a cosmetic faceplate for the LCD and covers for the tops of the towers and the lower parts too. Here are some pics.

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