woolwax Pro Undercoating Gun by Kellsport

This gun is extremely well-built and easy to use. The included instructions are very clear and helpful. Having three empty bottles is great: fill them all before you start and change as needed. I used about 3/4 of a gallon of Surface Shield to undercoat my F-350 crew cab truck. You'll need a 1/4" NPT female thread air plug on the handle of the gun in order to attach it to a standard air compressor hose. I used a 6-gallon 160 psi pancake compressor at 80 psi and had no trouble spraying straight from the nozzle and with the cavity wand. It puts out a very powerful, flared spray for good coverage and makes the work go a lot faster, especially compared to using spray cans. Wear a Tyvek suit with a hood, especially if you'll be under the vehicle on your back like I was. I also wore chemical splash goggles. If you're thinking about going the cheaper route and undercoating with spray cans, think again. This gun provides far superior coverage and is a lot faster.

I used to use spray cans of bar and chain oil, with 24" straws. They work for getting in the frame and hidden areas, but this gun is a much better way. It works faster and saves you money because you can use bulk oil, Fluid Film or chain&bar oil which are much cheaper. This gun gives a nice thin coating that's just enough to coat and protect, or thicker if you want. And when you're under there it's not dripping all over the place. Here's a recipe: Get a gallon pail of fluid film then mix approx 50/50 in a jug with chainsaw bar & chain oil which is really sticky/tacky. Then mix in some used motor oil, bearing grease and Lucas oil stabilizer. Some people dissolve paraffin+kerosene into a cream and add that too. Im running the gun at 75 psi. The gun comes with a few empty bottles. The way this thing sprays, about 1 bottle will do half of a truck. The hoses are very good for pushing up into frame rails and over top of shock perches, etc . The hoses are not extremely flexible, which is a benefit when pushing them up into the frame. Only thing is, they wont turn anything other than a very gradual curve...sometimes that doesn't work if the frame hole is small and you can't make the turn thru that hole. I wish they provided another hose that is thinner, like 1/4" O.D. so that you could get in smaller holes or smaller places. For these few problem spots I revert back to spray cans and LONG straws. An excellent thing to buy along with this gun is the ShopStraw FS250 . You can cut this straw into a 2 ft section and put it on spray cans of Fluid Film or Johnsens bar and chain oil JON4602 case or 4723 can , or any cheap spray chain/bar oil . You can see all this in my pic .Yeah this gun is a hundred bucks but If you think long run, your frame rusting out usually results in junking the vehicle or spending alot of money and time. A hundred bucks is nothing to prevent your frame and body from rusting out.If you're on the fence, let me save you the time. Just spend the damn money, get this gun. Get a jug of cheap Bar&Chain oil, Fluid Film and used oil. Some nice jack stands also make the job easier. I use Big Red jack stands, they are reasonably priced and are DOUBLE LOCKING. Now go and protect your baby from road salt and rust.

When i first started out with this gun it wouldnt spray.You have to have the silver tip on the gun for it to spray if you are not going to use the longer hoses...Just screw in the silver tip just enough to hold it but not all the way in, as the instructions tell you.Do the same with the longer hoses if you use them.It seems like it helped not filling up the plastic bottles all the way because this clogged up the little holes on top of the gun that are above the bottles.Keep the little holes open.Keep the bottles about 3/4 of the way full.I ordered a gallon of wool wax and it came in on a 95 degree day.I added just about two regular home spoons filled with vegetable oil to help thin it just a little bit more.I easily used a funnel to put the wool wax in the plastic bottles.I did the inside of a truck frame with the wool wax.The single longer hose with just one hole in it really moves some product.The shorter hose with the 360 degree nozzle worked well,but be patient.It has many holes in it so is doesnt seem as if its working in comparison to the longer hose with the single hole in the nozzle.At first I used the inside of a trash can to spray the wool wax to make sure I had the gun working properly.If your using the 360 degree shorter hose....just take your time.....I went back after using the 360 degree nozzle and checked the inside of the frame,it was completely covered It was amazing.So there you have it....if you do these things you should have no problems.Also keep the white plastic guard on the gun,it keeps the wool wax from shooting back up into your face.When i first used it with a plastic bottle completely filled,it shot out of the holes and into my face because I didnt have the plastic guard on the gun over the holes,but that was my fault because in overfilling the bottle,I clogged up the holes.Wear your safety glasses.What I loved is that the wool wax didnt leave a greasy residue on my hands and cleaned up easily.Whats amazing about wool wax,is that its a wax.I dont know what else is added to the wax,if they do add to the wax but there was no smell.I would wear a simple dust mask if you do not have adequate ventilation,not because it smells but to keep from breathing it.Some automotive sprays which loosen bolts have a terrible odor.Since there is no odor with Wool wax ,I can continue working in the garage no problems.Its amazing to look in the frame and see its completely covered inside!The shorter 360 degree hose was long enough to manipulate inside the frame,using the exhisting holes in the frame to get complete 100 percent coverage.I didnt need a longer hose.I didnt need to put any tarp on the garage floor because there was little to no overspray doing the inside of the truck frame.If you just use the the gun without the hoses under your vehicle,there still probably wouldnt be much overspray.Wool wax is amazing.I cant see how the inside of the truck frame could rust now.You want some truck with your Wool Wax????Wooooooo!!! lol

Excellent spray gun to use with woolwax. What came with it was a regular spray nozzle, an attachment that sprayed a 360 pattern to get inside beams on a car and other hidden areas, and an extension spray nozzle. Instructions are clear and easy to follow. I used a 90 psi setting on my 30 gallon oil free air compressor. I warmed up the woolwax in a bucket of hot water for 30 to 45 minutes. Everything worked perfectly. I did not have a car lift, so I put my truck up on Jack's. If you do it this way, I recommend wearing a tyvek suit, eye protection, and a respirator. It's a little more difficult without a car lift, but doable. In short, this purchase was well worth it, it worked perfectly.