Ok, I’ll try to explain how I make my sleeves. I use standard PVC plumbing pipe, an electrical PVC inner pipe, and for the smaller mold I use a equivalent of the 1 inch pipe as in you descriptions what would be a 25mm(0,98 inch) outer dia PVC plumbing pipe with an inner dia of 22mm(o,86inch). The inner pipe on this one is a aluminum pipe measuring 1cm(0,39inch)(I’m posted these measurements as the outcome looks so slim and wondered me if your 1inch pipe is one inch outer dia?).
Well, then I just measure two equal components in a way that might be a weak ling, but as seeing the posts on how easy the measuring and you don’t need a hi-tech scale, I take two paper drinking cups, put them beside a straight peace of wood, and draw a line on the two cups at what I think is reasonable accurate the same height. Tan p[ouring the induvidual components in a third cup mix hard for three minutes with a standard wooden stiring wood for paint from the local HD with painfull whrists and all scraping the wall and bottem, pour hte mixture in an athor paper cup. Stir again for three minutes, scraping again. Then I use a vacuum fresh-hold container somewath like this: Then pull it vacuum as much as possible, shaking and tapping it, withs works pretty well. And at the end just pour tea malls and let it cure for at least 24 hours at 71.5 Fahrenheit.
Wondered me if one needs stir the individual components in the container before measuring and pouring, witch should probably not as there is no mention in the instructions at Smooth-On
Tats about it. If you like to see some pictures, I’ll post some pictures.
Tanks,
JohDoe