Plastic Weld w/applicator 2oz Bottle

"Glue" or "adhesive" is not the right word for this stuff. It is a solvent that makes the surface of the plastic gooey so the pieces stick together as if they were molded that way, so it welds the pieces together; thus the name Plastic Weld. I was looking at buying the Plastruct sheet assortment to make a case for my Raspberry Pi & 5" LCD when I saw this stuff listed as "frequently bought together". As soon as I saw it I knew I wanted it. I fully expected this to have a very annoying stench and knowing that "dung happens" (as the Feb 29 reviewer detailed), before I opened the bottle I took a small cardboard box & cut a hole in the top to use as an anti-topple stand for this stuff. As it turns out it doesn't stink any worse than the common "Testors"(TM) cement, but I still did the work in my garage to keep the smell out of the house. The instructions say to put the pieces together and then apply a "drop" of the solvent to the joint & it will wick into the joint. Well, apparently if you cut the pieces nice & straight & smooth the stuff can't wick into the joint OR else it just evaporated too fast in my cold garage, because the joints broke very easily if I did it that way. You can see in the image of the easily broken bond that the plastic was only bonded at the very edge of the joint, not all across it. What worked best for me was to put a bead of the liquid on the surface where I wanted to bond another piece & then press the other piece onto the bead (see photos of "lay a bead..." & "making a good bond"). I knew it was going to be good if a bit of plastic oozed from the joint. ;~) I tried this stuff on polycarbonate and polypropylene and it worked well on the polycarbonate but did not affect the polypropylene. And it didn't work on vinyl blind slats either. I got a good edge bond on a couple of "We'll send you a tote bag if you sign up" cards I got from AARP, but it did break when sufficiently stressed (see photos of "good bond"). You can see in the photo of the broken bond that the surface of the bottom piece is rough all across the width of the bond unlike the bond that broke easily. The ink or whatever they use for the coloring on the front face is impervious to this stuff, though--I had to scrape it off in order to bond to the front of the card.

Works very well on repairing 3D prints that may have split along seam lines. Also good at making 3D prints stronger by "painting" over the prints. I used mine on standard PLA.

I do some musical instrument repair work for friends sometimes, and a friend of mine brought over a wireless microphone that had gotten dropped and stopped working. Turned out to be a broken, plastic battery holder. The Plastruct Plastic Weld stuff saved the day!! This stuff is AMAZING!!! Where has it been all my life?! It's not a glue. It literally, chemically melts/fuses the plastic parts together, which forms a super strong bond. It's as if it was never broken or cracked at all! I've never seen anything like this, but have always thought it would great if something like this existed! And, now it DOES!! I love it! Procedure: I made sure the surfaces were clean, then brushed some of it on with the built-in applicator brush, quickly lined up the broken parts, and pressed them together for about 30 seconds. Then, after about a minute. It was pretty well bonded at that point, but I brushed a little more all around the seams, and pressed and held it for another 30 seconds for an even stronger bond. You can actually see where it chemically reacted and fused the plastic together! Amazing stuff! And, a little goes a long way, because it has a capillary action, whereby it creeps into all the gaps by itself. I'm going to get SO much use out of this! I'm super impressed! You can see in one of the photos where there's a white-ish bead around the seam where I used this stuff in the battery compartment of the microphone. One word of caution though; Make sure you use it with plenty of ventilation, and consider using some nitrile gloves. There is a cancer warning on the label, as well as warnings not to sniff it, or get it on your skin. I wore a mask, nitrile gloves, and had my workbench fan on high. I didn't smell anything, and had nothing on my hands. Being safe and taking care of yourself is a good thing. I HIGHLY recommend this wonderful stuff!!

This product works exceptionally well on styrene plastic models the bond is excellent and almost instant. I have ordered this product twice before unfortunately this last time the lid of the bottle was not secured during shipping and half of the product leaked out and due to the no return policy I was not able to get a replacement.

I bought this Plastruct Plastic Weld specifically to assemble a bridge model (see attached pictures) since it was molded in black ABS plastic. All my other glues/cements on hand were geared toward styrene or were cyanoacrylates. And the model manufacturer explicitly recommended "Plastruct Plastic Weld" by name in their instructions. So imagine my surprise when the Plastruct Plastic Weld didn't hold the delicate parts together (not after a few seconds, not after minutes). The delicate pieces would just flopped over under their own weight when released. I might as well have been using water. So in frustration/desperation, I fell back to some on-hand Tamiya 87038 (an excellent product for its primary intended purposes) to assemble the first of the two bridge sections. But it was a long painful process as the parts "welded" very slowly and not very strongly with many repeat attempts. Then a light bulb went on "Read the instructions of the Plastruct Plastic Weld bottle" (the recommended step when all else fails). But alas, still no joy there either as it didn't say anything that I hadn't already tried. And it just reinforced that it was indeed intended for ABS and should be working. Then the second light bulb went on, "SHAKE IT UP". Bingo! The pieces bonded sufficiently in mere seconds where I could move on to the next piece quickly. I assembled the second bridge section in a tiny fraction of the time of the 1st one using the now-shaken Plastruct Plastic Weld. And the fully-set welds the next day were much stronger than those of the 1st bridge (which I subsequently went back and fixed up with Plastruct Plastic Welds). The Plastruct Plastic Weld also was easy enough to apply and it flowed well into joints via capillary action. The only real negative I encountered was that the in-bottle brush is quite fat. And although that somewhat depends on what you are welding, this is intended for scale model assembly after all. So it seems WAY too big (particularly in contrast to the excellent very-fine point of the Tamiya in-bottle brush). After all, I'm not trying to weld black ABS pipes for my house's toilet lines. For that, I go to Lowe's and get some Oatey's. I decided not to take away any stars from Plastruct Plastic Weld for not including SHAKE BEFORE USE in their instructions/label although I was really tempted. This may be the issue behind several of the negative reviews that I have read about it being ineffective. So please, Plastruct, update your label.

After reading all the great Amazon reviews about how this glue creates a chemical reaction making the parts actually melt together, much like pvc pipe fittings after being glued. I purchased this to primarily glue some 3D printed PLA printed items together. Trying to glue a square piece which slid into a square hole. The post slid in with a slight amount of friction, but without being to tight or to loose, so about the easiest glue joint one could ask for. I let the glue wick into the joint, it’s very thin glue and wicked in beautifully, at first I thought this stuff is great! I let the parts set up for several hours while tending to another task, picking the newly glued parts I turned it over and all the posts fell out! Maybe the fit wasn’t tight enough? No idea, but what I do know is I tried several times again on different pieces with the same results. So save your money and go buy some cheap Dollar Store super glue, it actually works better!

Exactly what I orderd, on time delivery

Hard to find the non-flammable solvent like this. It worked great for me.