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I'm starting to build out 3" and 4" RDD E-bays for various rocket builds I have in process or upcoming. I intend to use the same sized sled in each E-Bay with the same components (Eggtimer Quark & WiFi, Eggtimer Quantum and Featherweight GPS) for ease of use and transferability if necessary (e.g., one component in an E-bay gets borked for some reason - each E-Bay will have a sled but the sleds will be identical so they can be field swapped easily). I am going to use Blue Tube couplers and switchbands (for component survivability in the event of an ungraceful landing) in case of a since I primarily build with Blue Tube & LOC airframes. I have designed the sled and bulkheads using FreeCad and OpenSCAD, respectively. I do not have a 3D printer, I always outsource the printing to CraftCloud by All3DP.
First question, which materials would be recommended for printing the bulkheads and how thick should they be to hold up to deployment loads? Drogue will obviously be at apogee and should be a minimal stressor, but main deployment always puts some load on the upper bulkhead. I'm assuming deployment under drogue at about 50 mph. I am assuming either PETG or ABS are fine but want to get some expert input.
Second, I'm assuming the sled(s) can be made out of anything. Is PLA sufficient or is something stronger preferable?
Thanks in advance.
First question, which materials would be recommended for printing the bulkheads and how thick should they be to hold up to deployment loads? Drogue will obviously be at apogee and should be a minimal stressor, but main deployment always puts some load on the upper bulkhead. I'm assuming deployment under drogue at about 50 mph. I am assuming either PETG or ABS are fine but want to get some expert input.
Second, I'm assuming the sled(s) can be made out of anything. Is PLA sufficient or is something stronger preferable?
Thanks in advance.