B**N
Good quality pure white ABS filament
This is excellent ABS. All the prints I've done with this filament have come out great. I have done over a hundred prints, mostly small prints, and a few large ones. I used up the whole roll of filament and have ordered more. I didn't have a single problem using this filament. It's rolled nicely on the spool, with absolutely no filament tangles, and it's pretty consistent in filament diameter.The quality is very good. Comparable to MakerBot quality, but quite different in it's look and feel. MakerBot white ABS feels a bit softer, and is more opaque, but more of a cream color than true white.The feel of this ABS is different from the orange, red and black Filamex ABS that I've used, which are very slightly rubbery in texture. This is slightly more rigid feeling.The color is pure white, not off white, or cream, not at all slightly yellowish as a lot of other whites tend to be. It's also got a very slight hint of a translucent quality to it if items are printed very thinly. It's barely noticeable however.I have been very happy with this ABS and I highly recommend it. So far all of the Filamex ABS I've used has been of good quality as long as the proper printing parameters are used.Temperature wise, I think the optimal printing range is a bit narrower than MakerBot white ABS, and a little lower, and this might lead to inferior results if the temperature of your printer is off. On my FlashForge Dreamer, I print this filament at 230 C, on a heated build platform initially set to 110 C for the first layer, and then 100 C for the remaining layers. If the entire print is done on a heated build platform at 110 C, then a few of the lower layers of the print will deform a bit from overheating. This filament doesn't like being exposed to a heated build platform at 110 C for more than the first layer. This is a known issue with a lot of ABS, and since this ABS seems to have a slightly lower optimal temperature range compared with MakerBot white ABS, this overheating issue will be more noticeable if your printer runs hotter than it should. So if you notice the first few layers slightly deforming, then lower your build platform temperature after the 1st layer is printed.When I print using this ABS, my heated build platform is always covered with PET tape, which is an excellent build platform material for ABS filament. After the print cools down it pops right off of the build platform with no effort at all.Note that, like other Filamex ABS filament that I have used, this filament's chemical resistance is similar to HIPS: it dissolves more easily in D-limonene than in acetone. MakerBot ABS on the other hand dissolves rapidly in acetone and is fairly resistant to D-limonene. Filamex ABS clearly uses a different ABS formula than MakerBot uses. One might get the idea that Filamex ABS is actually HIPS because of it's similarity, but this is not the case. It will NOT bind to HIPS, is much stronger that HIPS, and is less brittle. It can be dual extruded with HIPS, and after printing, it easily separates from the HIPS. HIPS is only made of polybutadiene and styrene, and therefor will not bind to ABS. ABS contains a mix of polybutadiene, acrylonitrile, and styrene. The exact qualities of ABS depend on the ratio of these three ingredients. It would be nice to know the ratio of the polybutadiene, acrylonitrile, and styrene used to make Filamex filament. It's ratio of the three is obviously very different from what MakerBot uses to make their ABS.
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