Swaying prints.

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Stefan
Posts: 223
Joined: Thu Jun 15, 2017 12:46 am

Re: Swaying prints.

Post by Stefan » Sun May 13, 2018 3:33 am

Yes, the coupler could definitely be the issue. 1mm offset would explain the waves completely. If necessary, you could shim the lead screws with aluminum foil inside the coupler.

-S

SIMONZ
Posts: 9
Joined: Wed May 09, 2018 9:11 pm

Re: Swaying prints.

Post by SIMONZ » Mon May 14, 2018 12:13 am

Thanks for all the help here. I found the vertical rods were a loose fit in the bottom bracket, odd really when they are machined but there is a possibility that my mate could have made the hole bigger when he had it to get it working after I built it. I noticed the flex joint wobbling from the info on here then realised it was moving the vertical rods. Solution, mixed some epoxy resin glue, set everything up then put resin in the hole and slid the rod in. Rod doesn't move now and the vertical sway on the prints has dropped off dramatically! Now looking at everything and found the drive wheel on the X axis is not true, the motor is true but the belt drive pulley caused a regular tight spot when you move the print head side to side!

It's a steep learning curve but slowly getting there!

All I need to resolve now is why the printer locks up and stops around 20 - 30mm high on a 100mm high print!

Stefan
Posts: 223
Joined: Thu Jun 15, 2017 12:46 am

Re: Swaying prints.

Post by Stefan » Mon May 14, 2018 2:36 am

Hi SIMONZ,

There is a really steep climb from 80% to 99% perfect prints. Consider yourself initiated! Glad to hear the waving stopped.

-S

SIMONZ
Posts: 9
Joined: Wed May 09, 2018 9:11 pm

Re: Swaying prints.

Post by SIMONZ » Sun May 27, 2018 1:43 am

Hi all,

Bit of an update really. Been doing a fair bit of playing since the issue of the swaying prints and now fitted a pair of 40mm fans to the hotend to cool the prints. After messing around with various ideas of ducting the air to the print not the hotend I came up with a fairly simple one that appears to work! The two prints apart from one having a change of colour after layer 5, are done with the same settings. See if you can determine which had the new fans working!
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SIMONZ
Posts: 9
Joined: Wed May 09, 2018 9:11 pm

Re: Swaying prints.

Post by SIMONZ » Sun May 27, 2018 1:45 am

The fans!
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20180527_004424.jpg (2.51 MiB) Viewed 161 times

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