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What calculations for resin (used more than expected theoretical does not account for the tubing and pools in the bag. Pressure gradient from the cup to the outlet (linear) big pool of resin at one side of the bag. Figure out how much the part needs start with 3 times that amount what diameter of tube. After you figure out what you need and reduce/increase as needed.
How does one degasde-gas resin: put it in a chamber and degas. The vacuum pump was hemorrhaging oil so watch for weird pumps. Is it crucial to degas de-gas the resin (not sure but there were dry patches so highly recommend degassingde-gassing). Resin itself will boil at low pressure and the volatiles may become vapor (hopefully those bubble will go to the flow front and escape out of the outlet (clamp off inlet and outlet before continuing) (explore composites website) (try to not allow a full vacuum when you need to stop 1st clamp off outlet, vacuum first, and then inlet). Depends on the resin (this may not happen).
Clamped off the inlet (put 5 C-clamps and that seemed to do the trick). Disconnected the catch pot off (and it ran itself). Ran the last part (last 6 inches) off of the catch pot. Do not use reinforced tubing if you want to clamp it (no braided vinyl for stuff if you want to clamp, this is the tubing I mean btw to not use if you want to clamp https://www.homedepot.ca/product/canada-tubing-braided-vinyl-tubing-1-2-inch-inside-diameter-x-3-4-inch-outside-diameter-x-10ft-coil/1001002049 ). Polyester tubing will be fine to clamp. Infusion process took 15 min (840 seconds) (225 centapoise centipoise (low viscosity resin)). Working time of the resin around 120 min of pot life. We have about 90-112min for seat resin 114
No race tracking. What is resin throttling make a crease at the T-fitting if you need to throttle the resin presenting a flow restriction to the resin. Throttle the part that is going to fast by creasing (explore composites video). Did you trim after? Good idea to leave about an inch to trim.
Peel ply, mesh was cut to overlap which ones. Made sure that inlet and out pieces of peel ply had some overlap with the process materials made sure infusion mesh has to be shorter (does not overlap). Decent amount of peel ply at the end.
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Make sure that the mesh and the peel ply do not make the resin rush to the end (one side may reach first). Was there a gauge on the pump? Temp-time-distance not vacuum levels. Bagged the mold the night before to make sure there were no leaks (bubbles coming out of the mold and into the vacuum MEANS LEAK). Minimum 1 hour in vacuum take a picture of the gauge and see that it does not drop (and trouble shoot). If there is a MDF mold will have vapor so things will have to make its way out.
Vacuum drop test means checking the gauge noting the pressure, waiting, and then seeing if it has changed (become more positive), the required drop is 0 drop. Waiting 10 min is how long it takes for a leak. Very careful with process material and gum tape (do not drop it) make sure the bag does not have any imperfections. Process material ESPECIALLY vacuum bagging fill (no dust or grit or cause holes) and unroll onto a soft clean cloth. No floor unrolling. No pointy parts. The gum tape also needs to be clean. Store in the container, bag it.
Mold manufacturing: it took about 1 day for primer, 1 day CNC, sanding primer 4-5 days, 2000 grit polishing 2 days no repairs (repair the mold more coarse than it should have been, so put epoxy and then sand again, bondo works better, apply thicker layer of primer so it does not get too thick. Clean components before the primer. Best to have 2 people sanding at the same time. Male molds not as big of a deal but female super big deal (cannot round of the corner). Female mold you need caution with corners.
Mold release? Wax and PVA. 5 layers of wax, 1 layer PVA.
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Keep in mind how long it takes to infuse the distance. Shorten the distance with inlet and outlet ports at different parts of the mold, place inlet in the middle of the mold. Alternating ports?
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Part specific (panels could go anyway). Easy to tape then wet layup works okay. Wet layups are more tolerant to bagging errors.
There is a way to save if you know where the leak is but otherwise we don’t know. Research how to save these parts.