Hello folks. I am many hours deep into a door pull and was at the very end of my glue container and thought I could finish this part until more glue shipped. I’m using 3m 1099 heat curable glue. I have tried steam, an iron with a cloth and the heat gun to try to massage and flatten the bumpy areas. The glue was going on uneven but I thought I could heat it and press it flat. This glue is so thick by the time you stroke it once it thickens and you can stroke it again with the brush. Perhaps I need to reduce it. Anyways any tips would be helpful. Plan B is rip it off, sand it all off and sew another.
My suggestion would be to strip off leather and get a nice clean surface. Since you are brushing the glue on I would only glue the french stitch. Then I would stretch the material and only glue the under edges. That way there would be no chance that the glue could telegraph thru the material.
this is the way I’ve learned to get smooth pieces. only glue the seam. I use landau in a cheap harbor freight spray gun. I keep it very light on all other areas besides the stitch. You could use a light tack spray adhesive like this one, also available at harbor freight, it says high tack but it’s not even close to landau if you keep it light. Easily pull apart to reposition the piece
Your never resolve this without doing it again I feel, are your using a heat activated glue that goes fully off? If you are you can glue up the leather with a spreader before stitching together (I do), I guess brushing the glue on the substraight was more the problem?
I ended up redoing it. I’m using a heat activated polyurethane glue 3M 1099 that is really thick to start. Since the glue is 60-80% acetone by weight I can add my own acetone to thin it further to either shoot it with a gun or brush it smoothly. It starts to tack so fast uou often get 1 or 2 brush strokes before you get lumps created. After the glue is completely dry I can position my pieces, without risk and move them over and over again until seams are perfect. Here are some examples of some better pieces I just completed for this job