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Re: Flashforge ABS white residue

Posted: Sun Mar 20, 2016 4:40 am
by pcman
If you lightly heat the white marks they disappear very quickly. The first image is untreated and is badly marked. In the second image, I have heated the feet and tail and in the third image I have fully treated the model.

I use a small handheld butane torch: http://www.canadiantire.ca/en/pdp/micro ... u5gcHP2ZaQ

If you can't find something like that, I've heard that a regular lighter will also work. Start about 6" away and slowly bring it closer until the marks start to disappear. If done properly, the model won't get hot enough to deform.
whitefix.jpg

Re: Flashforge ABS white residue

Posted: Tue Mar 22, 2016 11:18 pm
by zapta
Searched around for build bed surfaces and stumbled upon this "As the BuildTak aged I noticed that I would get more and more white haze on the bottom of prints." http://www.tested.com/tech/487154-my-fa ... nics-lego/

It seems the the latest surface material is PEI. For example this http://www.amazon.com/Polyetherimide-Na ... B0013HKZTA glued with this http://www.amazon.com/gp/product/B007Y7D5NQ . Check Amazon reviews and answers for more info. I think I am going to give it a try.

Anyway, this is a BuildTak issue, not Simplify3D, they are off the hook this time. You can get new BuildTaks for your FFC Pro here http://www.amazon.com/Platform-Sticker- ... B00IBZE2EQ

Re: Flashforge ABS white residue

Posted: Wed Mar 23, 2016 3:29 am
by pcman
zapta wrote:Anyway, this is a BuildTak issue, not Simplify3D, they are off the hook this time.
I don't think it's that simple. The rabbit in the image that I posted earlier was printed on a freshly installed (same day) platform sticker just like the one you linked. However, I completely agree that this isn't an S3D issue.

Some filaments seem more prone to the problem than others. I made rabbits in six different colours and the IC-3D red was about the worst. IC-3D orange, Hatchbox green and an unknown brand of blue ABS that came with the printer were almost as bad. On the other hand, some filaments, such as Hatchbox black and Hatchbox gold, don't seem to suffer at all. They were all printed from the same file on an SD card so the only change was the filament.

Re: Flashforge ABS white residue

Posted: Wed Mar 23, 2016 11:15 am
by zapta
That Rabbit example looks very good. I will give that heating post processing a try. Thanks for sharing.

Re: Flashforge ABS white residue

Posted: Fri Mar 25, 2016 11:03 am
by zapta
I did last night my first print with PEI (Flashforge Creator Pro, ABS). It's magic. Perfect first layer, no 'white residue', no wrapping, and at the morning the machine was cold and the part was just laying on the bed. No need to 'remove'. It's something else. Hopefully the quality will not degrade for one reason or another. Got the PEI and 3M adhesive from Amazon, plenty of information there in the reviews.

Re: Flashforge ABS white residue

Posted: Sun Apr 10, 2016 10:28 pm
by countspatula
Those are definitely stress marks from the ABS cooling and popping off the bed. The only way to get rid of them is as you said, heating them. I have this heatgun and use it on setting 1 and it does a nice job of cleaning it up.

http://www.amazon.com/ECG-HG-300D-Mini- ... s=heat+gun