Taz 2 evolved to 4

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piercet
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Re: Taz 2 evolved to 4

Post by piercet » Sun Jul 20, 2014 2:00 pm

As long as you aren't over too much you can shim them out with thin pieces of filler (washers, aluminum sheet drilled out, etc. and still get decent travel. There is some adjustment built into the X axis. You basically want to make sure you aren't binding on the bearing or leadscrew by forcing the alignment too wide or too narrow. The best way I've found to test this is to assemble the whole axis without the leadscrew to start and then manually move it top to bottom checking for binding. If it seems to be working fine, add the leadscrew bits back in and then run it up and down again a few times. If you seem to be getting binding at the top or bottom of the run, chances are you need to adjust the alignment

2con
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Re: Taz 2 evolved to 4

Post by 2con » Wed Jul 23, 2014 12:44 am

Thanks guys. I will leave the plates as is and see how they work! I will do my best to test binding based on what piercet said (however this is still confusing to me).

After heavy indecision, Ive also decided against painting my raw aluminium X End Plates for obvious reasons...

For the other noobs like me, theres a group purchase (as mentioned by unextas) for those cool vibration dampers for $23 for 3 here:
https://groups.google.com/forum/?utm_me ... wESzDy0AYA I cant wait to see how much quieter the TAZ gets.

For taz 2 to 4 upgrade you also need:
-M5x20 thumbscrew for new z motor mount (cut down to make M5x14 if nec.) : http://www.mcmaster.com/#catalog/120/3070/=syhcyu or you can make your own and print a cool knob!..
-M2 Screws for z-end stop switch : http://www.mcmaster.com/#91290a017/=syhhdi
-M2 Washers : http://www.mcmaster.com/#90965A110
-24V Silicon Heat bed : http://www.lulzbot.com/products/24v-silicon-heater
-24V 15A Power Supply : http://www.lulzbot.com/products/24vdc-1 ... wer-supply

If you plan to upgrade to a dual extruder you also need:
-M4 Washer
http://www.mcmaster.com/#catalog/120/3228/=syhfw9
-M4 Nuts
http://www.mcmaster.com/#91290A168
-M4 Screws
http://www.mcmaster.com/#91290A168

Optional Upgrade:
-M5x14 frame screws - for future frame upgrades like and SD card & exacto knife holder
http://www.mcmaster.com/#91290a230/=syhpy8
-Tri-flo grease or white lithium grease(if you upgrade to ball bearings) : http://www.mcmaster.com/#catalog/120/2171/=syhd63
http://www.ebay.ca/sch/i.html?_sacat=0& ... ase&_sop=2
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 23, 2014 4:32 pm

Well, just finished my upgrade.. Z axis is working fine and moves smoothly with zero backlash :) two degrees left on the bed to start my first print.. I'll update in a little bit :)

edit: first print came out OK! Here's a quick video: http://www.youtube.com/watch?v=G72Tx1H5gvs

I shot it with my phone and the microphone seems to have picked some weird resonance noises that I couldn't hear.. The noise of the printer is definitely very different. The linear bearings are indeed louder than the igus plastic bearings, but the steppers are much, much quieter. Overall, the printer is much quieter than it was. I can't hear it in the the next room, while before I could walk upstairs and still hear it.

The print quality improved quite a bit, but there are still some artifacts and ripples that I'm not too excited about. I didn't replace the Y axis IGUS bushings with linear bearings (wanted to save some $$ on the hardened rods) so there is still a lot of wiggle in the bed, but I was hoping that wouldn't be as noticeable. I'm tempted to replace the bushings with the bearings anyway, even knowing the stainless rods won't last very long, just to see if it makes any difference.

Here's a couple pics of the upgrades:

Image
Image
Image
Image

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

Re: Taz 2 evolved to 4

Post by 2con » Tue Jul 29, 2014 11:41 am

Wow that is the sickest, most badass machine on this forum! Those ball-screw rods and your X_End Plates are mean looking ! I feel like you have created a one-of TAZ that nobody else has! You should finish by printing the rest of your black parts in white any maybe design some custom corner brackets as well add some white LEDs (I have lots of bright sign grade LEDs I can share for free. They look like this http://image.dhgate.com/albu_509118405_ ... rproof.jpg)

Im still on holidays so I won't be able to do my mods until next week. Thanks for sharing!

Two question, why does your hardened rod stick out of the top a little? As well, did you find any clearance issues installing the vibration dampers on any of the axis's?

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

nopick
Posts: 965
Joined: Mon Sep 09, 2013 11:14 am

Re: Taz 2 evolved to 4

Post by nopick » Tue Jul 29, 2014 1:56 pm

Very nice!

I was having trouble with the print bed twisting when it changed directions as well. I initially installed bearing on the Y axis but they started wearing grooves in my rails. Orias recommended the following:

Remove the Y axis assembly.
Loosen the bushing mounts on the bottom of the bed.
Twist the bushing mounts to tighten the bushings up against the rod.
Tighten the bushing mounts while holding a twisting force on them.
Re-install the Y axis assembly.

For me, this solved the problem. My bed no longer does the twist.

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

Re: Taz 2 evolved to 4

Post by unxetas » Wed Jul 30, 2014 11:31 pm

2con wrote:Two question, why does your hardened rod stick out of the top a little? As well, did you find any clearance issues installing the vibration dampers on any of the axis's?
Thanks for the nice comments :) There's no good reason why the rods stick out of the top, they could easily be slid down a couple of mm.. That's just where they ended up when I put them through and I didn't really think about it too much!

I didn't find any issues at all with the vibration dampers.. Just had to slide the pulleys forward by a few mm to match the offset of the dampers. The only possible problem is that the dampers attach to the motors with 2 screws and to the frame mounts with the other 2 screws. My ABS printed parts are not quite as strong as the stock Lulzbot parts (I should have used more infill and ideally a 0.5mm nozzle) so I don't know if I'll run into trouble with the mounts cracking in the future, but so far, so good. I've been busy getting some other projects going so I've probably only printed about 5 or 6 hours worth of plastic after the upgrades, but I'm happy with how things turned out. I haven't had time to really get this thing dialed, and it's frustrating that the quality still isn't near what my mini kossel was cranking out (without ANY effort) but realistically, the stuff I'm doing doesn't have to be cosmetically perfect.

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piercet
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Re: Taz 2 evolved to 4

Post by piercet » Wed Jul 30, 2014 11:59 pm

Where did you get those metal X axis end plates, and would you have a second set to sell by any chance?

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

Re: Taz 2 evolved to 4

Post by unxetas » Thu Jul 31, 2014 10:25 pm

Just a perk of having a CNC mill :)

I didn't make a second set.. Theoretically I could make more, but it's a bit of a pain and I wouldn't feel right asking for enough $$ to cover the time they take me.. These would be much easier to make on a waterjet!

ross_badger
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Joined: Thu Oct 10, 2013 4:44 am

Re: Taz 2 evolved to 4

Post by ross_badger » Sat Aug 02, 2014 4:58 am

unxetas wrote:
2con wrote: Is there anything I will have to change (or know) in my firmware regarding my evolution from taz 2 to 4?
So far, I think the only thing you might have to change is the Z steps per mm.. I believe the leadscrew has a larger pitch than the 6mm threaded rod! You might also be able to speed the Z axis a bit, but that's more of an optional thing :)
What is the TAZ 4 Z steps/mm with the leadscrew? What is the calculation to obtain it? :?:

2con
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Re: Taz 2 evolved to 4

Post by 2con » Sat Aug 02, 2014 11:42 am

ross_badger wrote:
unxetas wrote:
2con wrote: Is there anything I will have to change (or know) in my firmware regarding my evolution from taz 2 to 4?
So far, I think the only thing you might have to change is the Z steps per mm.. I believe the leadscrew has a larger pitch than the 6mm threaded rod! You might also be able to speed the Z axis a bit, but that's more of an optional thing :)
What is the TAZ 4 Z steps/mm with the leadscrew? What is the calculation to obtain it? :?:
I can called help desk about this and all you do is go snooping through the taz 4 firmware and find the value associated with z steps per minute and you change your current value to the taz 4 value the value on your LCD screen or (manually with a reflash).
I havnt done the mods yet but I have made all my parts including the x end plates so please let me know if I'm missing a step. I am upgrading to a 24V bed as well so I believe with this new addition there is a lot more to change on top of z-steps.
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

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