The KC Welder Pro has an 80 Watt element, flat tip and a 3/16 in. hole in tip for repair rod insertion. Includes a selection of Hobie color welding rods. Fix holes and cracks or customize polyethylene products. Insert the rod into the tip and place against the product to be welded. The tip heats the plastic surface and the rod. As the materials melt, move the tip along the repair area while pushing the rod into the tip to fill the repair area with new plastic material. Plug small holes after moving accessories. Rebuild keels after excessive wear from dragging.
Product works as advertised. Never thought I would need one, but it does the job nicely.
If someone is an expert at welding or soldering they might get this product to work. I couldn't. It takes 10 minutes to heat to desirable temperature, and I was completely unable to repair a flex crack in my kayak despite 3 attempts taking 20 minutes each. I bought a flexible adhesive patch for 1/5 the price, applied it in 30 seconds, and it completely solved the problem. I do NOT recommend this product for flex cracks.
I haven't had much luck stopping my leak. It is in a difficult location and this tool is rather large to maneuver inside my kayak.
These items worked very well with other steps to plastic weld a small crack in an expensive kayak. It is not difficult or costly to perform such a repair, and these tools were a small investment.