<![CDATA[SoliForum - 3D Printing Community — Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/topic/2154/fixing-banding-zwobble-with-fine-threaded-zrod/ Fri, 04 Nov 2016 05:20:41 +0000 PunBB <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/127928/#p127928 I'll jump on the bandwagon. I ordered from Amazon two parts and designed and printed the 3mm nut hugger. My tolerances were a bit tight on the nut hugger so I heated the nut with a lighter and pressed it in. Actually designed my part to hold two 3mm nuts. The second slid right in place and super glued to secure.

BoM:

http://soliforum.com/i/?ePd4dHx.jpg

http://soliforum.com/i/?075syaC.jpg

http://soliforum.com/i/?Ogsdg9g.jpg

http://soliforum.com/i/?XkMkH3N.jpg

http://soliforum.com/i/?TqZMneP.jpg

http://soliforum.com/i/?LpQMKvJ.jpg

^-- 0.3mm layer height vs 0.05mm layer height Moire goes away... next up I have a 1/32 driver to install for extruder

]]> Fri, 04 Nov 2016 05:20:41 +0000 https://www.soliforum.com/post/127928/#p127928 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/124904/#p124904 I just want to say thank you all for the wealth of information, I should have done the Z rod first as mine was basically waving at you when moving the bed.  I have the lawsy carriages, bearings along with rods that need to be cut which I plan to do next.  I wanted to get the GT belts/pulleys replaced as well but can't seem to find a place that sells everything (or as close to everything in one kit), I'm from the US. I tried to get a focus on the banding but finally gave up, anyhow, here's the pic.

http://soliforum.com/i/?TU7znYX.jpg

]]> Sat, 09 Jul 2016 19:10:19 +0000 https://www.soliforum.com/post/124904/#p124904 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95208/#p95208 Crap. I should have ordered red filament to print mothers day gifts... Now I have to buy something lol

]]> Fri, 08 May 2015 17:13:41 +0000 https://www.soliforum.com/post/95208/#p95208 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95206/#p95206 Thanks for the quick response! I may do this in a week or two...hammering out some other issues right now, just waiting for parts, hopefully I can get it up and running tomorrow in time to print some things for mother's day gift(s).

]]> Fri, 08 May 2015 16:52:07 +0000 https://www.soliforum.com/post/95206/#p95206 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95205/#p95205 brwhitesell wrote:

So if I'm going to do this I'd still need to purchase an adapter for the stepper motor to the new rod right?

Right. This is the coupler that I ordered, but there are other options available. You can go with a flexible coupling or a stiff one. You could print one off thingiverse. I think someone else even mentioned using some kind of tubing.

]]> Fri, 08 May 2015 16:40:59 +0000 https://www.soliforum.com/post/95205/#p95205 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95201/#p95201 chancrescolex wrote:

Just received my order from McMaster-Carr today. I was surprised to find the pieces that I needed were so cheap on there. Most things I've looked at in the past on their site were way overpriced. Anyway, here's what I got:

Type 18-8 Stainless Steel Fully Threaded Rod, M5 Thread, 0.8mm Pitch, 300mm Long - $5.12
http://www.mcmaster.com/#90024a224/=x1tlvz

Steel Thread-Locking Slotted Insert for Metal Thin Wall, M5 Interior Thread, 5/16"-18 Exterior Thread, 5/16" Long - $6.75 for 5-pack
http://www.mcmaster.com/#90259a218/=x1tk60

The threaded rod was packed well and is straight as an arrow. I'm glad I didn't gamble on an ebay one. Can't wait to get it installed. Just waiting on the motor coupler now. Should be here tomorrow.

And I have 4 extras of the M5 thread adapters, so if anyone wants to convert to an M5 rod and doesn't want to buy a 5-pack of these, I can probably help you out.

So if I'm going to do this I'd still need to purchase an adapter for the stepper motor to the new rod right?

]]> Fri, 08 May 2015 15:50:53 +0000 https://www.soliforum.com/post/95201/#p95201 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95193/#p95193 That looks much better, good work!

]]> Fri, 08 May 2015 14:30:23 +0000 https://www.soliforum.com/post/95193/#p95193 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95185/#p95185 Printed the same test print at 0.2mm layer height. I think I might need to do a z-offset calibration, but other than that I'm happy with the results.

http://imgur.com/X9kp9YY.png

]]> Fri, 08 May 2015 13:09:24 +0000 https://www.soliforum.com/post/95185/#p95185 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95142/#p95142 I bet the squeak is from lateral motion inside the coupler, then. The rod is scraping along the top of the motor shaft. You could separate them and polish the end of the rod so it rides smoothly, but it might not be worth the effort to you.

]]> Thu, 07 May 2015 20:25:08 +0000 https://www.soliforum.com/post/95142/#p95142 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95140/#p95140 TheBaron wrote:

Oh, does the end of the rod touch the end of the motor shaft inside the coupler? the squeaking could be from the two pivoting against each other.

It does. I read that's the correct way to install it. It prevents any vertical flex in the coupler.

]]> Thu, 07 May 2015 20:16:44 +0000 https://www.soliforum.com/post/95140/#p95140 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95138/#p95138 Oh, does the end of the rod touch the end of the motor shaft inside the coupler? the squeaking could be from the two pivoting against each other.

]]> Thu, 07 May 2015 19:58:46 +0000 https://www.soliforum.com/post/95138/#p95138 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95126/#p95126 I have been swamped these last couple days, but i found a length of brass rod at work. I'm going to see if i can turn it down and cut some 5/16-18 threads on the outside and to make a coupler like the one you got, but for an M3 nut. My printer has been completely out of commission for half a year, so here's hoping I don't screw it up again as I upgrade it. I want it at least running before I start working on crazy anti-backlash ideas.

]]> Thu, 07 May 2015 18:25:06 +0000 https://www.soliforum.com/post/95126/#p95126 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95076/#p95076 Only had time to do one test print because I have calculus homework...

http://i.imgur.com/S8hW7ei.png

There is some very faint banding that matches the thread pitch, but it's barely even noticeable when it's not under the printers LED lights. I might try to get rid of it with a well nut.

I'm getting some weird high-pitched squeaking in one small section of travel on the rod. But what's weird is that the sound seems to come from the helical coupler. I greased everything up thoroughly so I'm not sure what it could be.

]]> Thu, 07 May 2015 03:02:21 +0000 https://www.soliforum.com/post/95076/#p95076 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95007/#p95007 You are going to be so happy and amazed with the performance.  You had the worst case of z wobble I've seen in a very long time.

]]> Wed, 06 May 2015 02:59:27 +0000 https://www.soliforum.com/post/95007/#p95007 <![CDATA[Re: Fixing banding (z-wobble) with fine threaded z-rod]]> https://www.soliforum.com/post/95005/#p95005 Started on disassembly tonight. Took the bed out. Got the old threaded rod off the stepper motor (what a pain in the ass). Put in the thread adapter and I'm giving the loctite time to cure. Nothing left to do now but wait...

]]> Wed, 06 May 2015 02:40:26 +0000 https://www.soliforum.com/post/95005/#p95005