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CAD model of my next machine
Just been playing around in CAD and made a rough outline of what I think the next machine will look like It has - 300 mm circular build platform - 300 mm z axis height - removable part box containing...
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Re: CAD model of my next machine
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Looks good. From the looks of your chamber, its pretty small and doesn't need a big pump setup. I am going to guess the chamber volume is around 0.5 cubic meters so a smallish pump of around 400 l/min...
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what he does in the "repstrap" model is somewhat irrelevant, no? I mean, he needs to get to the vacuum he needs, but once he has a running EBM repstrap, 3D printing a roots blower or a turbomolecular...
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The circle on the build platform and light green triangle above it is a transparent part i made to approximate the e-beam path. the build platform is actually 320mm x 320mm square. The blue part in...
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Ah. That makes a lot more sense. I see the two hoppers now. The drawings don't really show the mechanism that refills them, but its clear where it is. pumps... Either sublimation or diffusion pumps...
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"what he does in the "repstrap" model is somewhat irrelevant, no?" Yes, its very relevant. Please understand this is a very complex project. The vacuum system along with the electron gun systems are...
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Ok, so you're saying that if pyrotronics gets given a used sublimation pump to generate the needed vacuum, he'll have to completely re-design the vacuum chamber since he's currently using a diffusion...
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the diffusion pump oil should last along time like you say, I haven't actually had to change mine yet. The main way that it will get ruined is if you open the vacuum to air and this will burn the oil...
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I'm wondering if the powder dispenser could look anything like how laser printer toner gets spread on the drum. I suspect not though, 'cause I think its kinda dependant on the toner being an insulator...
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