nema17 dampers

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Matt_Sharkey
Posts: 347
Joined: Mon Oct 20, 2014 3:10 pm

Re: nema17 dampers

Post by Matt_Sharkey » Mon Aug 17, 2015 8:22 pm

Ever since I installed dampers, I have been getting more belt skips, 2 today had me pretty mad. Seems the dampers allow the motors to torque a few degrees into the belts, not guarenteeing a great grip on the belts. I can't seem to get them tight enough, particularly the x axis.

I have my travels set to 250mm/s and the Acceleration set to 800.

any advice?

Slipshine
Posts: 182
Joined: Sun Apr 13, 2014 3:02 am

Re: nema17 dampers

Post by Slipshine » Mon Aug 17, 2015 11:09 pm

You might want to examine the dampener to make sure it is not cracked in the rubber.
Or no longer bonded to the steel parts.

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Farr0wn3d
Posts: 297
Joined: Tue Mar 31, 2015 4:16 am
Location: Calgary, Alberta, Canada

Re: nema17 dampers

Post by Farr0wn3d » Tue Aug 18, 2015 12:59 am

ednisley wrote:
innkeeper wrote:reproduce it if I get the homing speeds at the right speed
Two words: mechanical resonance

The rule of thumb for fixing that involves avoiding that particular speed, which is easy enough for 3D printers that never move at the same speed in the same direction for very long. Set the homing speed to another value and the problem will Go Away.

And it doesn't affect print quality, because the resonance takes longer to build up than typical printing moves will allow.
If I'm ever having a day thats a little too good, I'm gonna PM Ed to let him deflate my enthusiasm. ;)

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insta
Posts: 2000
Joined: Tue Sep 16, 2014 3:59 am

Re: nema17 dampers

Post by insta » Tue Aug 18, 2015 2:23 am

Matt_Sharkey wrote:Ever since I installed dampers, I have been getting more belt skips, 2 today had me pretty mad. Seems the dampers allow the motors to torque a few degrees into the belts, not guarenteeing a great grip on the belts. I can't seem to get them tight enough, particularly the x axis.

I have my travels set to 250mm/s and the Acceleration set to 800.

any advice?
They do allow a bit of flex, but it sounds like you got a bum one :(
Custom 3D printing for you or your business -- quote [at] pingring.org

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ednisley
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Re: nema17 dampers

Post by ednisley » Tue Aug 18, 2015 2:23 am

Farr0wn3d wrote:PM Ed to let him deflate my enthusiasm
Suffice it to say I've made mistakes so vast that none survive to tell the tale... [sigh]

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innkeeper
Posts: 265
Joined: Fri Jun 26, 2015 3:56 am
Location: New Windsor, NY

Re: nema17 dampers

Post by innkeeper » Thu Aug 20, 2015 3:11 pm

insta wrote:
Matt_Sharkey wrote:Ever since I installed dampers, I have been getting more belt skips,
They do allow a bit of flex, but it sounds like you got a bum one :(

I'll second that... i think you have a bad one.

i was a bit paranoid about them and abused them when i first got them to see if i would have problems, and simply couldn't get the m2 to mis behave with them even at high acceleration.
M2 - MKS SBase w Smoothieware, GLCD, 24v, Upg Z & extruder stepper - IR bed leveling, Astrosyn dampers X/Y/Z, MIC 6, Zebra, PEI, & glass Build Plates - E3D, V3B Hotends, & more - many other 3d printers - production printing.

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Jules
Posts: 3144
Joined: Wed Jan 21, 2015 1:36 am

Re: nema17 dampers

Post by Jules » Sun Aug 23, 2015 9:43 pm

Whoa insta - you done good dude! :D

Finally put the dampers on (got tired of waiting for hubs to assist) and while I noticed absolutely no difference in the noise level, (all I could ever hear was the fans anyway - mine was pretty tight), I noticed a BIG difference when printing infill for thin walls. My M2 used to jog all over the place when doing thin wall infill, and now ..... Baby don't dance no more! Running my first print now and it's tight as a drum!

Good call on these things! Very glad I got 'em! :D

Vandal968
Posts: 215
Joined: Mon Jul 13, 2015 4:30 am

Re: nema17 dampers

Post by Vandal968 » Tue Aug 25, 2015 2:28 am

Dampers arrived today, WOW! What a difference!!!!!

Thanks Insta!

c

jsc
Posts: 1864
Joined: Thu Apr 10, 2014 4:00 am

Re: nema17 dampers

Post by jsc » Tue Aug 25, 2015 5:01 am

Sigh. I was resisting, but with all the raves I find I can no longer. Anyone have an extra pair left over that I can buy off you?

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insta
Posts: 2000
Joined: Tue Sep 16, 2014 3:59 am

Re: nema17 dampers

Post by insta » Tue Aug 25, 2015 5:22 am

I got mine here, they were quick to arrive: http://www.ultibots.com/nema-17-damper- ... y17rmdamp/
Custom 3D printing for you or your business -- quote [at] pingring.org

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