Taz 2 evolved to 4

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nopick
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Joined: Mon Sep 09, 2013 11:14 am

Re: Taz 2 evolved to 4

Post by nopick » Wed Jul 16, 2014 3:21 pm

Not off hand. You just need some hardened rods that are designed for bearings.

2con
Posts: 110
Joined: Sat Dec 07, 2013 11:35 pm

Re: Taz 2 evolved to 4

Post by 2con » Wed Jul 16, 2014 3:28 pm

Sweet here's a link for everybody else from mcmaster carr. 6112K47: http://www.mcmaster.com/#catalog/120/1091/=sv79v5
500mm 10mm DIA.

UPDATE:
Credits go to unxetas for this one.
Last edited by 2con on Wed Jul 16, 2014 7:19 pm, edited 2 times in total.
Taz 2 since crowdfunding 2013
-complete upgrade to Taz 6, swing-arm auto leveling, anti-z wobble installed, hardened steel rods with all linear bearings, vibration dampers, auto cleaning, hexagonal noz upgrade
To do:
-Cable carriers

unxetas
Posts: 38
Joined: Thu Jun 26, 2014 4:01 pm

Re: Taz 2 evolved to 4

Post by unxetas » Wed Jul 16, 2014 5:13 pm

I got my lm10uu bearings from China yesterday and the hardened shafts from McMaster today. They fit fine on the shafts but will definitely be louder than the IGUS bearings! They will also absolutely need grease to function and stay smooth.

Just waiting for one last package from 2con to start my conversion! I'm printing all new bearing holders today just so I can start preassembling stuff without taking the printer apart. That will make it so I can print any last minute emergency bits while already assembling the new parts, and also means I get to keep the entire old X (minus the carriage) and Z axis as spares..

I'm also adding motor dampers to the stepper motors which should quieten everything significantly and reduce vibration/resonance.. Since the new bearings will be louder, I'm hoping the quieter motors will sort of cancel out any increase in noise :)

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piercet
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Location: Battleground, WA
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Re: Taz 2 evolved to 4

Post by piercet » Wed Jul 16, 2014 5:40 pm

Cork sheets? or something else for the dampner?

2con
Posts: 110
Joined: Sat Dec 07, 2013 11:35 pm

Re: Taz 2 evolved to 4

Post by 2con » Wed Jul 16, 2014 7:11 pm

So the TAZ 4 double bearing holder are different from the TAZ 2. Print 2 for the z Axis movement here:
http://download.lulzbot.com/TAZ/4.0/pro ... ng_holder/

Unxetas and I split my McMaster hardware order! Nobody needs 100 screws of each type for just 1 printer. Go lulzbot forums! :mrgreen: 2 or more members interested in this upgrade could do the same as us. ;)

2Con
Taz 2 since crowdfunding 2013
-complete upgrade to Taz 6, swing-arm auto leveling, anti-z wobble installed, hardened steel rods with all linear bearings, vibration dampers, auto cleaning, hexagonal noz upgrade
To do:
-Cable carriers

unxetas
Posts: 38
Joined: Thu Jun 26, 2014 4:01 pm

Re: Taz 2 evolved to 4

Post by unxetas » Wed Jul 16, 2014 8:28 pm

Piercet, they're actual stepper motor dampers from astrosyn - http://astrosyn.com/section.php/44/1/vibration_dampers

Astrosyn only sells in packs of 10 I believe, but there are other sources like tridprinting.com.. There were also a few group buys kicking around on other printers' forums, but the prices are all similar. Do some YouTube searches for astrosyn dampers I'm sure you'll find some comparisons :)

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piercet
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Location: Battleground, WA
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Re: Taz 2 evolved to 4

Post by piercet » Wed Jul 16, 2014 11:26 pm

Huh. I'll have to try some of those too maybe. The only worry would be if they are stiff enough to avoid shaft deflection on insanely tight belt printers i guess.

unxetas
Posts: 38
Joined: Thu Jun 26, 2014 4:01 pm

Re: Taz 2 evolved to 4

Post by unxetas » Thu Jul 17, 2014 6:10 pm

They are very stiff - some folks had tried cork or silicone layers and this is at least an order of magnitude stiffer than either of those. I've seen great results on the delta style printers, so I'm hopeful it'll work well here - I'll post an update when they're installed, hopefully in the next few days!

2con
Posts: 110
Joined: Sat Dec 07, 2013 11:35 pm

Re: Taz 2 evolved to 4

Post by 2con » Sat Jul 19, 2014 3:14 pm

My x end plates are finished but I have 1 concern.
When you place them side by side you can feel a slight difference in thickness. Is this a critical dimension? I did not have the correct thickness of material to start.

The spec says to be 1.88 and I'm at probably 1.65 and 1.75

I could potentially shave one plate down so they both match in thickness, but is having them they way they are going to cause any issues? Or should they be remade starting with the correct thickness?

2Con
Attachments
image.jpg
homade X end plates
Last edited by 2con on Wed Jul 23, 2014 1:02 am, edited 1 time in total.
Taz 2 since crowdfunding 2013
-complete upgrade to Taz 6, swing-arm auto leveling, anti-z wobble installed, hardened steel rods with all linear bearings, vibration dampers, auto cleaning, hexagonal noz upgrade
To do:
-Cable carriers

unxetas
Posts: 38
Joined: Thu Jun 26, 2014 4:01 pm

Re: Taz 2 evolved to 4

Post by unxetas » Sat Jul 19, 2014 9:01 pm

2con - from my understanding of the way the assembly goes, no I don't think it'll matter too much! I think the bearing holder and the Z nut mount both mount to the same side of the plate, and those are the critical items.. The X motor and idler mounts will be at slightly different distances from the center but that shouldn't affect anything!

Although, I hope you mean 0.188", 0.165" and 0.175" ;)

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