SoliForum - 3D Printing Community — Need help. warping and separation

Re: Need help. warping and separation

null@example.com (rickitytick) — Wed, 04 Mar 2015 13:37:37 +0000

IronMan wrote:

@rickitytick,
Are you printing in PLA or ABS? I tried BulidTak a few months ago and it was a horrific FAIL for me with ABS. I understand it is the Cat's meow with PLA.

I'm printing in ABS. Once you get the z offset right, it sticks pretty good. As good if not better than the glue stick or hairspray I tried previously (admittedly, I haven't tried Aquanet though) The first print I did, my offset was waay too small and I ended up ripping the sheet off the bed before the part came loose.

One of the only things that sucks about it is when you do Soliprint's z-offset calibration. The lines that have the smallest offsets are really hard to get off of the sheet and will probably not come off all the way. But I've printed over those areas on the bed and it still stuck fine.

Re: Need help. warping and separation

null@example.com (carl_m1968) — Wed, 04 Mar 2015 04:00:40 +0000

Best hairspray is Finalnet. It is a buck a can and is as old as hairspray. It can keep your in place during a tornado. It is good for bed adhesion as well.

Re: Need help. warping and separation

null@example.com (MLA) — Wed, 04 Mar 2015 03:38:10 +0000

android78 wrote:

@MLA - If you're an aussie and find a cheap local supplier of aquanet, please let me know. The redken makes printing a little less economical then it should be.

Sry... Not an aussie, but aussie was the brand of hairspray that I tried to use...

Re: Need help. warping and separation

null@example.com (IronMan) — Wed, 04 Mar 2015 01:25:21 +0000

I believe the necessary ingredient you need is Acrylate Copolymer...

Re: Need help. warping and separation

null@example.com (android78) — Wed, 04 Mar 2015 01:09:32 +0000

@MLA - If you're an aussie and find a cheap local supplier of aquanet, please let me know. The redken makes printing a little less economical then it should be.

Re: Need help. warping and separation

null@example.com (MLA) — Wed, 04 Mar 2015 00:19:37 +0000

Good to hear! Thanks for the advice and I will let everyone know how it turns out when I get some aquanet. The kind I tried first was an aussie brand from the wife's cabinet...

Re: Need help. warping and separation

null@example.com (android78) — Tue, 03 Mar 2015 21:44:09 +0000

@MLA - I think that the main issue people have with hair spray is that there are only a few that will work. In Australia, I have tried several different types and the only one that I found to work is an expensive Redken 28 (about $25 a can), but it works really well and you don't need too much anyway. In the US, I believe that Aquanet is the bees knees AND CHEAP!

Re: Need help. warping and separation

null@example.com (IronMan) — Tue, 03 Mar 2015 19:31:45 +0000

Bare glass!! Clean any tape residue off with acetone and spray a fine mist before heating up.

Re: Need help. warping and separation

null@example.com (MLA) — Tue, 03 Mar 2015 18:54:07 +0000

I'll add aquanet to the next shopping list and give it another try. Does it work better on bare glass or am I ok to put it over the PET tape?

Re: Need help. warping and separation

null@example.com (IronMan) — Tue, 03 Mar 2015 18:34:39 +0000

MLA wrote:

Maybe I should give hairspray another shot... I also think that better adhesion wouldn't do anything for the layer separation problem.

You should! Make sure that it is Aquanet!

Also, I have noticed in my evaluations of past failed prints (due to bad adhesion), that the lifting is progressive and that continued lift during the print job has a very direct effect on de-lamination of layers.

Re: Need help. warping and separation

null@example.com (IronMan) — Tue, 03 Mar 2015 18:27:22 +0000

@rickitytick,

Are you printing in PLA or ABS? I tried BulidTak a few months ago and it was a horrific FAIL for me with ABS. I understand it is the Cat's meow with PLA.

Re: Need help. warping and separation

null@example.com (rickitytick) — Tue, 03 Mar 2015 17:42:20 +0000

I was getting warping and layer separation, but not quite as bad after i put down a BuildTak sheet. Once I got the z-offset calibration dialed it, I haven't had a problem since. i did the initial calibration with the sheet on and then fine tuned it until the layers stuck nicely.

Re: Need help. warping and separation

null@example.com (MLA) — Tue, 03 Mar 2015 17:39:46 +0000

For those of you that use hairspray, have you ever tried using abs/acetone slurry and does the hairspray actually work better? I've only tried using hairspray once and it didn't work, but I've had a lot of success using the slurry and PET tape on other printers. Maybe I should give hairspray another shot... I also think that better adhesion wouldn't do anything for the layer separation problem.

I have flipped the fan on the extruder and removed the plastic cover. If I keep the lid closed, hot end at 230 and bed at 100 I can print for about an hour before the hot end gets too hot. The only filament I have to test with is the green ABS from push plastic and the natural ABS that came with the printer. I know some warp is expected an a part of this size in ABS, but could the filament be the issue?

Re: Need help. warping and separation

null@example.com (IronMan) — Tue, 03 Mar 2015 15:27:30 +0000

If it's working, then great!

Re: Need help. warping and separation

null@example.com (pshcims) — Tue, 03 Mar 2015 14:58:41 +0000

IronMan wrote:

Be aware that for ABS you want to keep your build chamber pretty warm to help avoid the print lifting from the bed due to uneven cooling...leaving the lid open will not help this.

Heat buildup can also affect the extruder and shut it down.

I increased the bed temperature to 110, and began using hairspray. So far, the lifting problem has not returned. I imagine that an open lid allows a consistent temperature for the length of the print, and avoids the build up over time.