1 Topic by Takararyuu

  • Takararyuu
  • Newbie
  • Offline
  • Registered: 2015-06-10
  • Posts: 1

Topic: Davinci 1.0 - Heatbed seems to melt objects.

Dear forum,

I have a Davinci 1.0, and it seems to mess up the objects i print with it. The objects print fine once the first 2-3mm has been printed, but it is the base 2-3mm that form a problem:

There are several brown spots (burnmarks for the ABS i use, i'd assume). The sides become wider and the bottom solid (100% filled), so my guess is that it melted. Attached to this post are images showing this problem, and it is further defined in the document:
http://www.filedropper.com/myprinterfai … tcorrectly

I have no experience with 3d printers aside from the one i have now, and would like to hear your thoughts (and preferably solutions) about the problem.

Thanks in advance!
Takararyuu

Post's attachments

IMG_4790.JPG
IMG_4790.JPG 1.53 mb, file has never been downloaded. 

IMG_4800.JPG
IMG_4800.JPG 2.45 mb, file has never been downloaded. 

IMG_4802.JPG
IMG_4802.JPG 1.32 mb, file has never been downloaded. 

IMG_4803.JPG
IMG_4803.JPG 1.21 mb, file has never been downloaded. 

IMG_4808.JPG 1.29 mb, file has never been downloaded. 

You don't have the permssions to download the attachments of this post.

2 Reply by carl_m1968

  • carl_m1968
  • carl_m1968
  • Member
  • Offline
  • From: Far North almost not Dallas
  • Registered: 2014-10-17
  • Posts: 6,512

Re: Davinci 1.0 - Heatbed seems to melt objects.

Takararyuu wrote:

Dear forum,

I have a Davinci 1.0, and it seems to mess up the objects i print with it. The objects print fine once the first 2-3mm has been printed, but it is the base 2-3mm that form a problem:

There are several brown spots (burnmarks for the ABS i use, i'd assume). The sides become wider and the bottom solid (100% filled), so my guess is that it melted. Attached to this post are images showing this problem, and it is further defined in the document:
http://www.filedropper.com/myprinterfai … tcorrectly

I have no experience with 3d printers aside from the one i have now, and would like to hear your thoughts (and preferably solutions) about the problem.

Thanks in advance!
Takararyuu


Is this a stock machine? Are you using a resetter and changing temps? If changed what is bed set at. On a 1.0 the middle of the bed is 30 to 50 degrees higher than the edges due to the location of the thermistor.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

3 Reply by jnadke

  • jnadke
  • Member
  • Offline
  • Registered: 2015-01-24
  • Posts: 42

Re: Davinci 1.0 - Heatbed seems to melt objects.

This probably isn't your bed melting objects as much as warping in the object.  In my experience these burn marks are usually the print (circular objects particularly) curling inward/upward.  When the print head retraces its path it pushes down on this point and scorches it.


Sometimes its the material, usually re-calibrating the bed or adjusting the print head temperature fixes it.

Also, in Repetier, there's a "minimum time per layer" option.  I usually set this to 10 or 20 seconds.  If you print too fast, the previous layer doesn't have enough time to cool, even for ABS.