SoliForum - 3D Printing Community — PETG did not stick to bed

Re: PETG did not stick to bed

null@example.com (Jimmyli) — Sat, 07 Jun 2025 14:44:38 +0000

A 4-inch diameter part has a lot of surface area, which means it generates significant shrinking forces (warping) as the upper layers cool. This force is what's pulling your print off the bed. In your slicer, set the part cooling fan to 0% for the first 3-5 layers. After that, have it ramp up slowly to a maximum of 30-50%. Never 100% fan for PETG unless you are doing extreme bridging.

Re: PETG did not stick to bed

null@example.com (heartless) — Wed, 10 Jun 2020 11:21:42 +0000

You want the Aqua Net in the purple can.. "Extra Super Hold" variety.. have been using this stuff for years..

Light mist coats - 2-3 - spray on one, let set up with bed at 60C, spray next... do not pile it on.

Protect the moving parts & hotend with something.. drape rags over, block with cardboard, etc. If you have a removable bed.. take it out to spray.

Re: PETG did not stick to bed

null@example.com (dubbsd) — Tue, 09 Jun 2020 23:48:40 +0000

Thanks Carl

Re: PETG did not stick to bed

null@example.com (carl_m1968) — Tue, 09 Jun 2020 23:45:54 +0000

Use hairspray. Aquanet is cheap and one application is good for several prints. Also make sure the first layer is not as squished as you would for PLA or ABS. Instead of half of your desired layer thickness you want the squish to only be about a third.

PETG did not stick to bed

null@example.com (dubbsd) — Tue, 09 Jun 2020 22:45:16 +0000

I am using PETG and it let loose from the bed I have had it pull chuncks out of the glass where their was not glue
But it has never let loose. I am printing with glass and glue stick. bed temp 80°c using a .8 printcore. nozzle temp 240°c
printing at .24 layer thickness 2 shells
the part is aboyt 4" in diameter so it had a lot od area on the bed.

Thanks
Dale