WELD-ON 4 Acrylic Adhesive - 4 Oz and WELD-ON Applicator Bottle with Needle

I had a expensive Reef Dynamics Pellet reactor that had two big (Leaking) crack where the housing is drilled near the uni-seal. No easy way to fix as its near a flex/stress area on the tube.Not shown is I took it all apart removed the black rubber uni-seal and cleaned the plastic with 96 percent rubbing alcohol (Which crazed the plastic some). I drilled a few shallow divots in the crack (Not all the way through) And filled the crack best I could (I used painters tape on inside to stop flow then peeled tape off)The stuff runs out of the applicator like water, don't even have to squeeze it gravity alone works when you tip it on side.I totally guessed how much I needed, it evaporates fast so exess is gone fast but it craze the plastic on areas you don't want it to go.- 2 coats on outside- 1 coat on insideRan it with water + new uniseal and ZERO Leaks so far.It does not look pretty because doing the inside of tube the solvent ran away from the crack some and made cosmetic smudges. They are gone when its fill with water as seen in my picture on right side close up.If I had some practice I could have done a little cleaner on the job. Not sure how on the inside though, it was just to make sure the inside crack had solvent on it.

It's a great product that works great .but a bit to expensive

Bond doesn’t cloud …. well worth it the price. U don’t need much.

I use this product to glue together scale model airplanes. It gives the best looking, strongest bond I've seen of any material, *IF* you use it correctly. That's difficult because it has basically no surface tension... it's "waterier than water", and flows way from freely (even from the small needle) than you'd expect. Some tips:- Use in a well ventilated area or outside. Minimum a bathroom exhaust vent, not just an open window.- This product WILL EVAPORATE WHILE INSIDE THE CLOSED APPLICATOR BOTTLE. That's why it comes in such extreme packaging. Measure out just as much as you are planning to use in one sitting, and pour it into the applicator using a METAL funnel.- Store the applicator bottle in a well-vented area, or empty it after use.- Be CAREFUL. Wear your goggles. I don't wear gloves but I'd wash my hands right away if any gets on them. I've never tried latex gloves but that would probably be a very bad idea.- Practice on scrap.- The easiest way to to open the packing is to drill two small holes on the top outer edges, on opposite sides of the bottle. Make one 3x larger than the other, and it will pour well. When the bottle is full-ish, you can squeeze the applicator (while empty) and insert the needle upside-down into the hole to fill it.- One drop in the seam is sufficient to weld for applications of a few inches. LESS IS MORE.- Too much and you will literally melt what you are trying to glue.- Working time is technically 2 mins, but many plastics have a pretty strong bond within 5-10 seconds. Be sure you have things where you want them BEFORE you apply the glue.- When possible, apply the glue to the interior of what you are building. It will wick itself into the cracks and make imperfections less visible.- If you spill a drop onto plastic, DO NOT wipe. The welding happens instantly and you'll make it worse. Just wait until it dries and sand it down a little bit.- If you spill it somewhere in the house, clean immediately with a paper towel.- The included applicator is meh. Buy some O-rings or higher qualify applicators once you get used to the product.It sounds tough, but once you get the hang of it you won't want to use anything else.

Bought this to build my Festival totem and has to glue several acrylic sheets together. I had no idea what product to use until I did some research and found this! it works fast so you're not stuck hurting your arms holding the pieces together while they dry and the strength of this glue is unreal! you would think the pieces were attached from the start! Glue is very thin, almost like water so be very careful and decisive in your gluing.

I've use this in class and wanted some of my own. This is not a glue. It's a product that joins two pieces of acrylic together by basically chemically bonding them until they are one piece. It is a very thin substance almost like water and it is an evaporative substance (fumes so wear a n95 mask). When I used it in class the teacher had just punched a nail whole in the top of the inside of the can lid (it's double sealed) and she sticks the little needle in the squeezable bottle in the hole to suck some of the product out of the can. You do not need much as it's very thin and runs. You don't have much time to bond it together about 1-3 minutes then it's there like it was always just one piece. Don't make mistakes joining things as it will not come apart again once it's bonded. She kept her whole can in a glass jar with an additional seal which makes sense as it can evaporate and smells. She said she had the jar for several years so for our purpose of making acrylic jewelry bond it worked really well. If you were buying it for bonding a large piece I think it might evaporate before you could bond it. So that may be why some people are having a hard time with it.

I bought this to help hold together acrylic bar displays and boxes I created. The adhesion is great, however, even with the applicator, it is hard to manage the flow of this stuff and once it overflows, it immediately breaks down the acrylic so it looks permanently stained. It is NOT easy to use…admittedly I’m new to using the product and I’m sure it will take a while to learn a better method of application.Also, pouring from the can to the applicator loses a lot of the fluid, even with the little “funnel” that comes with it. I had to use a small bottle with a needle cap to create suction to pull it out of the can and then was able to easily pour into the applicator. Don’t put too much in the applicator as any left over evaporates within 24 hours.Overall, the WeldOn worked great and it definitely brought real value as it cut down on messy gluing.

Easy to use and holds the plexiglass pieces securely, if you accidentally get fluid on the the panel it doesn’t smear the surface.

I have bought this to weld acrylic sheets together for a tank. Did the job well.

Very good product

Original product and as described. Acrylic adhesive works as expected and wonderfully so.The applicator is of the cheapest possible quality but does gets the job done.Unfortunately this is extremely overpriced duty to the additional margin, duty, shipping and rupee conversion charges - had to go for this as the product is not available locally / in India.Took 20-25 days to deliver but not exceeding the promised delivery time.There was prompt followup and communication from seller when complained about the delay and lack of status updates.

As expected from Amazon! Exactly what i wanted

used whole bottleBonds nothing..Just nothing !!