UHU Shoe & Leather

This is a contact adhesive, which is essentially what you need when gluing onto curved surfaces (such as the bottom of shoes) without holding or clamping the materials. The two materials are never curved identically, so unless you have a way to firmly clamp the materials into the same curve until the glue sets, you really need to use a contact adhesive such as this one.Here is how I used it to put a 1.8mm thick rubber sheet sole onto my leather-soled shoes. I used 'Svig Stick On Sole Sheet 1.8mm Caramel' in the example in the photo.1. Cut the rubber sheet to size using scissors; you may need to cut the heel portion separately of course.2. If you can, sand the edges of the sheet. This is not essential. Do not sand the flat surface of the sheet because it is usually supplied ready-to-use, already with a slightly roughened surface.3. Very lightly sand the sole of the shoe (go lightly, you only want to roughen the surface). You can use a 400 grit paper, do it lightly, and use a sanding block.4. Wipe off the dust off the shoe sole with a slightly wet tissue, and then dry.5. Test the position of the sheets on the sole of the shoe. If you wish, use a permanent pen on the sole of your shoe, to outline precisely where the rubber sheets are to be glued.6. Use isopropyl alcohol (IPA) with a tissue to clean the sole of the shoe. Don't apply it on places which will not be glued, because it may cause discoloration and dissolve surface finish. Do the same with the rubber sheet surface which will be glued.7. (You may first wish to test this step on a piece of scrap rubber to get a feel of the glue before proceeding with the actual rubber sheet). Make a note the time, and then squeeze out some glue onto a section of one of the rubber sheets, and using a very small paintbrush (e.g. an artists brush), spread it out evenly. Squeeze out some more glue and repeat until that entire rubber sheet has a thin layer. Don't over-work any area, because the glue dries quickly.8. Now repeat step 7 with the shoe sole, so that it too is covered with a layer of glue in the area where that sheet will eventually be attached to (don't attach it yet!).8. Wait until ten minutes have passed, and the glue will feel almost dry. You don't want lumpy areas where the glue is still wet, so that's the reason for spreading the glue evenly and thinly in steps 7 and 8.9. Now, hover the rubber sheet over the sole of the shoe, and, aligning one end with the pen markings in step 5, gently press the sheet into position. You cannot undo this step, so you need to align it perfectly before gently pressing down from one end, and continue until the entire sheet is pressed down.10. Using a rubber mallet, whack the rubber as hard as you can, and repeat until you have whacked all areas of the rubber sheet. The bond strength depends on the strength of the whack, and not on how many times it is done. You may need to place one hand inside the shoe, to support it while you use the mallet on the rubber. You're all set! Now repeat steps 7-10 for the next rubber sheet, until both shoes are complete!11. If you can, wait a few hours (preferably at least half a day) before using the shoes.

used this to reattach a flapping sole on my air max 97's it worked for a while and then the sole started flapping again, it also dries in an orangey / light brown colour which was noticeable with the clear air bubble / white sole on the trainers

Does the job for most jobs with shoes