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Does etching the glass of a HBP help with adhesion?

Posted: Wed Nov 26, 2014 6:07 am
by helix_3
Cold weather is causing a lot of curling with PLA. Would taking a power sander to my glass build plate help with this at all?

Re: Does etching the glass of a HBP help with adhesion?

Posted: Wed Nov 26, 2014 2:35 pm
by Tim
Can't hurt to try. You'll have one side etched and one side smooth; you can always go back to the smooth side if the etched side isn't working.

I've heard of sandblasting borosilicate glass; will a power sander really work? Etching with hydrofluoric acid works, but you'd probably want to be a professional before messing with that stuff, plus have access to a laboratory-grade enclosed fume hood, etc., etc. I know that the usual "glass etching kits" you get at hobby stores won't work on borosilicate. I'd suggest getting a spare glass plate before you start abusing it.

Re: Does etching the glass of a HBP help with adhesion?

Posted: Wed Nov 26, 2014 5:29 pm
by insta
helix_3 wrote:Cold weather is causing a lot of curling with PLA. Would taking a power sander to my glass build plate help with this at all?
What build surface preparation are you using?

Re: Does etching the glass of a HBP help with adhesion?

Posted: Wed Nov 26, 2014 6:31 pm
by helix_3
insta wrote:
helix_3 wrote:Cold weather is causing a lot of curling with PLA. Would taking a power sander to my glass build plate help with this at all?
What build surface preparation are you using?
Single coat of unscented Extra Super Hold Aqua Net. It used to work great, but now that I'm printing with higher infill and a colder environment, I'm having troubles.

Re: Does etching the glass of a HBP help with adhesion?

Posted: Thu Nov 27, 2014 12:29 am
by jimc
for a stronger hold get garnier frictis #5. green spray can with a black cap. it has easily double the bond that the aquanet has.

Re: Does etching the glass of a HBP help with adhesion?

Posted: Thu Nov 27, 2014 12:47 am
by helix_3
jimc wrote:for a stronger hold get garnier frictis #5. green spray can with a black cap. it has easily double the bond that the aquanet has.
Def. going to try that out. Purple glue stick (Scotch brand Mega Glue Stick) is working pretty well right now, but I'd prefer to have the convenience of an aerosol spray.

Do you think the strength of the bonds could be stacked by applying purple glue stick, then spraying it with hair spray?

Re: Does etching the glass of a HBP help with adhesion?

Posted: Thu Nov 27, 2014 12:51 am
by jimc
no. you will be printing on what you last applied.