3MPrimer 94 Pen 3-Pack | Car Wrapping Application Tool

This is my second 3 pack that I expect to use at a later date to replace one of my deflectors that did not get installed correctly. I used the first 3-pack to install 3M tape to Window Air Deflectors and then applied to the vehicle per instructions. The holding strength appears to be excellent had I not made a mistake (see below).I have 1 warning. Before applying the primer 94 and removing any tape for mounting, practice putting the "piece" in place where it will go. You only get ONE chance. Once the 3M tape hits the primer 94, it is there to stay and you will not be able adjust the position. I was off just a little and applied a slight downward pressure to get one end of the deflector into the right place. That end had too much stress pulling on it and it did hold as I had hoped, but the rest of it appears to be very solid. I will replace it at a future point in time.The second deflector I practiced putting it into place and used automotive masking tape on the vehicle to mark the exact position of each end of the deflector. Then I practice putting it into position multiple times to make sure there was no twisting or pressure being applied during the installation. Once comfortable, I applied the primer, removed the tape cover, aligned the two ends at the masking tape marks and it installed perfectly with no twisting or stress being applied to the joint. The deflector does not even vibrate in the wind at 70 MPH on the interstates.It's true. Practice does make perfect. Also be sure that the surface for the adhesive is clean. I used alcohol.

Great product. makes a difference in making things stick!

These came in a set of three, super cheap. Each vial is a one time use. Does not come with any directions. I used one to put a magnetized cell phone mount on my dash in an awkward place that isn't level or flat. It did take up the finish of my dash, if I ever remove the mount, if I can, there will be a 2" by 2" mark. Had to look up on You Tube how to use it or I'd never have known to break it open by squeezing it. Use in a ventilated area, strong fumes! After swabbing the area with alcohol and allowing it to dry, I applied a small layer of the primer. Waited a few minutes, removed the sticker from the mount and held it on the spot for a few minutes with some pressure. Left it to set all night and in the morning when I tried it was completely secure. I wanted my phone to be down lower where it's out of the way, not up along the dash in the sun or in sight or near a vent. The spot is at an angle so I took these extra steps and it was worth it. I'd only use this primer on a surface I wanted permanent placement as it may alter the finish on whatever it's applied to.

From what I’ve read, this is a must for sticking anything on your car. Used it for replacement fender flares. But you MUST SNAP to get the fluid going. Anyone saying they were dried out didn’t break the fluid open first. It’s like a chem light.

I needed this because I bought the most beautiful peacock colored vinyl wrap with the intention of wrapping my husbands PS4 controller as a surprised. The vinyl itself, while beautiful, was subpar in adhesive quality even using a professional grade heat gun. So, I bought this for support. It did the job and I was able to get the vinyl to adhere to the controller. My only issues with this is the quantity. Once you pop one open, you have to use it IMMEDIATELY or it dries out pretty quickly. There is also very littler quantity. I used all 3 tubes for one controller. It also has a very strong odor, so be sure to use in a well ventilated area. Gets the job done but I feel like there could have been something better and easier to work with out there.

Other reviewers have said the ampules are small and don't contain much. That's rather true. I pulled four small trim pieces from my car to wrap, and needed all three pens to cover their perimeters, since the vinyl was being heat-stretched around all the edges. Worked out well for me, but if you're working on any kind of larger project, get the can and a paintbrush. Time will tell if this stuff worked out, I'll update this if my vinyl ever releases.Also, take note: crack the ampule once to release the stuff. You won't get any more primer out by breaking them further, but you just might get an incredibly sharp metal shard to poke out the side and slice your finger open and fill the wound with toxic goo that burns like you wouldn't believe.

Only one of the three adhesive promoter sticks worked as two of them were already crushed and dried up. Item is not eligible for return or replacement so recommend saving the headache if you need some of this and not buy online. Spent almost $10 for one stick that holds less than a thimble full of liquid.

3M primer always works as expected. I used it for the cell phone battery replacement, new double sided tape for the battery and the cell phone itself.