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Anonymous /diy/2928764#2932508
7/19/2025, 4:03:46 AM
>>2932491
>current
SPI debug said its set to 800 now. I've also set 400 for homing and factor 0.3 for holding. So if R_Sense 0.11 is correct (cant be bothered, it's a BTT V1.1 and Vref measured about 1V). Then thats that. I considered designing one of those channels, so I can mount the fan upright in the dead space and have it blow through that, if needed.
I am not getting 1mm/min and below on X, Y and Z. Z still is surprisingly noisy, maybe threaded rod vs belt?
Dimensions seem okay by eyeball and 1mm/min on Z sounds real cool like the waves coming in at the beach. Probably thanks to that interpolated sinusoidal waveform.
High speed still works fine. I was worried at first. So I guess I can still print.
>picrel
The electrodes I last used in manual experiments are just pieces of brass and graphite. Manual meaning using a flexure and a micrometer screw to feed so that it sounds about right. At 10s of kHz you cant look at every event on the scope so you have to tell by sound what the current probability for discharge is. Tap water and lamp oil as dielectric.
I made a crude dial gauge holder for the toolhead once. I'll use that. Or glue shit directly to the toolhead kek. Empty food container, slap some steel in and feed something through, hopefully. Lets hope the steel box is good enough for the EMI. I dont want the thing to go full spastic with a cup of lamp oil on the bed. Experiments are low power currently so dont expect big ass holes, also EDM is worse by a factor of maybe 1e3 compared to conventional cutting operations. So it wouldnt be the righg choice to fuck a big ol hole into something anyways.