Beg and borrowed many tips from this site. Have started to make my own pump buckets. Used a step drill to make female 18mm at top and the steps down to 16mm.... leather was about 1.6mm thick and I've used a 24mm punch... made a 4mm hole in centre of cup for drying purposes. These have NOT been tested, so I'm just starting a thread on a DIY topic that's been covered already. Just a slight tweak on other people's brilliance. I can bore you with many more details if thread floats. Cheers fellas.
