schotty
Posts: 2
Joined: Wed Aug 30, 2017 7:51 pm

CR-10 GCode issues regarding adhesion to glass.

Greetings!

New owner of a CR-10 and am new also to 3d printing.

I was able to print off the test print fine, but nothing else (downloaded only, havent drawn anything myself yet). So I presume this would be a setting that is being overlooked that is wrong or missing in the newly created gcode for the other models I have been trying to print.

I am using PLA on a glass bed. Nothing is sticking for any period of time, causing the model to shift at some point in the print, resulting in the end a blob connected to a spaghetti mess if I dont stop it.

Any tips?

Sofar my troubleshotting has been to tweak the temps 195 nozzle, 60 bed, and to add an z offset of -.05mm, no dice. I rechecked the levelling at the start of each run, as an effort to preclude that as being my culprit. At a loss here as to what I am missing.
brian442
Posts: 1243
Joined: Mon Nov 28, 2016 5:35 am

Re: CR-10 GCode issues regarding adhesion to glass.

If you haven't read this already, there's lots of good suggestions here:
https://www.simplify3d.com/support/prin ... to-the-bed

You could also try increasing the first layer height to 200% and set the first layer width to 150-200% as well. If you combine that with the suggestions above, it can work really well
wirlybird
Posts: 1374
Joined: Sun Jul 17, 2016 1:32 pm

Re: CR-10 GCode issues regarding adhesion to glass.

I do a normal level/height adjust with paper with no additions in S3D for height. Glass at 65 for first layer and then drop a bit. Mainly S3D defaults for PLA for the printer selected.
Make sure the glass is very clean. Clean with alcohol. A finger print is enough to cause trouble.
renevc
Posts: 1
Joined: Thu Dec 31, 2015 12:02 pm

Re: CR-10 GCode issues regarding adhesion to glass.

I managed to do some prints on the glass wonderfully well. After that i never managed to get the shit sticking to the glass. Tried lots of things. Beware of high and wide first layers. They overlap each other and if this is the case they will never stick.
I bought a buildtak plate and now it works well.
schotty
Posts: 2
Joined: Wed Aug 30, 2017 7:51 pm

Re: CR-10 GCode issues regarding adhesion to glass.

Thanks for the tips. Panned out to be two things.

1) Levelling wrong. Had it a wee bit too tight. A friend had stopped over and we found it this part quickly.

2) Crap glass. This took a bit. The glass that came with was bowed in the middle. Ordered a new one and I seem to be good.

Something my buddy noticed was that my test gcode was taking up little space, but my other prints were much bigger in the x or y axis, or both. The bow wasn't big enough to muck with smaller objects, but did on larger ones.
joesoap583
Posts: 105
Joined: Sat Mar 08, 2014 11:01 pm

Re: CR-10 GCode issues regarding adhesion to glass.

I just got a CR10 and whilst I am very pleased with it the one problem I've noted is that the heated bed tops out at around 90 degrees - I have always used 110 degrees when printing with ABS and frankly the heated bed would take forever to get up there. My experience of ABS is that it doesn't stick well under 110 degrees.

I think a significant issue might be that everything is 12v on the CR10, all my previous 3D printers have been 24v. So with a 12v power supply delivering 30A (which is the power supply in the CR10) it is able to deliver 12 x 30 = 360 watts, which unfortunately to me feels a bit light. I am currently waiting for some thermal insulation to mount under the CR10 heater - others have suggested this significantly improves the heated bed characteristics.

https://www.amazon.co.uk/ask/questions/ ... TCBLGH70GP

https://www.amazon.co.uk/gp/product/B00 ... UTF8&psc=1

If you fit a Keenovo silicon heater you get 700 watts, which others on the Internet advise is great - it heats up quick. However please be aware that these Keenovo silicon heaters are running with MAINS VOLTAGE so it can potentally be deadly if you had unsafe wiring. Note you can't plug this heater into the CR10's control board, it has to be coupled with an SSR to switch the mains voltage.

https://www.ebay.co.uk/p/KEENOVO-Silico ... 1590031185

https://www.aliexpress.com/item/KEENOVO ... 41152.html
Posting as a private individual - 3D printing is a hobby activity.
Creality CR-10S owner.
dreamcutter
Posts: 6
Joined: Tue Oct 31, 2017 2:00 pm

Re: CR-10 GCode issues regarding adhesion to glass.

To print directly on glass or aluminium with PLA, smear a thick layer of Elmer's washable glue stick or even generic liquid white glue. Glue layer should be dense and even but not perfectly smooth so the PLA can grab the dried glue surface. You can reuse build plate glue if it does not get scraped off on part removal. Use a damp sponge or light alcohol to re-spread remaining dried glue to even out the surface for the next build.

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