My printer is a slow one. Printing it with 100% infill so it will have maximum strength would take my little printer about 10 hours total and it barely has room to print one half of the box at a time. I made them to be housings to put the BOBs in after all the connections are made, mainly for protection against getting shorted on the bottom and stuff falling on the top.
You'd be better off checking https://www.3dhubs.com for someone close to you with a printer. You either send someone an STL or point them to a download at Thingiverse (or one of the other similar sites) and tell the person what material, layer height, infill % etc. You'd also probably want it printed in ABS or PETG instead of PLA. Currently I only have bright green UV fluorescent and clear PLA. Makergeeks makes all their filament in the USA and has developed a PLA they call Raptor, which they claim is stronger than ABS or PETG. It has to be printed hotter than either of those (unlike regular PLA) but that gives it the benefit of being able to withstand boiling water without softening. I did make an error on that larger box, got mixed up on the offsets for the screw holes. Corrected files have been uploaded, plus I merged one side of the posts in the box bottom with a sidewall for higher strength. I should do the same with the smaller box to improve the strength. From: Gene Heskett <[email protected]> To: [email protected] Sent: Tuesday, August 23, 2016 2:47 AM Subject: Re: [Emc-users] I designed printable boxes for Chinese breakout boards. On Tuesday 23 August 2016 00:31:09 Gregg Eshelman wrote: > 3D printable, download STL files from Thingiverse. > For the really cheap Chinese BOB http://www.thingiverse.com/thing:1732451 I am regretfully useing one of those in the first channel of my G0704 conversion. Be aware that its opto-couplers are slow as hell, and will not transmit a pwm waveform accurately enough to use as spindle control, so that pin has had the opto removed and bypassed. Once that was done, speed is within 5% of requested all up and down the scale. > For the somewhat less > cheap Chinese BOB with more features. Printing this one right now in > UV fluorescent bright green PLA. > http://www.thingiverse.com/thing:1732470 This one I'll probably use in my on-going Sheldon lathe rebuild. The top cover should have its edges rebated for access to the terminals screws with the cover in place. With the cover in place, the pcb should be well anchored, but it covers the screws. How much do you want for one of those Gregg?, I like it, and can machine the access clearance rebates easily enough. Or maybe just drill holes for the screwdriver to pass thru. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
