is this build too ridiculous?
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not quite the size you need, but i assume you had a look at the
https://folgertech.com/collections/3d-printer-full-kits/products/folger-tech-ft-6-3d-printer-kit -
or not quite the 5k (6k)
http://www.modix3d.com/tech-spec/?affcode=aniw
120X build volume – 1200 X 610 X 610 mm -
@veti this is a good option but by the time its all said in done with options and shipping it's over 8K. which makes it so we have to have a business case and ROI vs under 5k we can just piece it together with any leftover monthly budget. it also takes away from building one myself which is half the fun.
i'll definitely look into it more though. -
@kaduhn1 said in is this build too ridiculous?:
it also takes away from building one myself which is half the fun.
yes of course. and getting paid to do it is a bonus.
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@kaduhn1 is there no cheaper z motor without an encoder? Unless you're planning someting fancy its only contribution to the system will be a tiny amount of inertia.
Edit: Scrub that comment. Encoder ready, not encoder fitted.
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Have you considered a large delta? I built a 600 dia (24") by 620 Z for about $1100 that produces EXCELLENT results. One of the advantages of delta for large printers is that the "table" does not move. This becomes a HUGE advantage as printers scale (<=pun intended).
I'm using a 24" glass table for a bed. $40 on Amazon (US). 6mm thick. Custom Keenovo heater stuck to the bottom (about $200 to have custom made).
You said 2 feet by 3 feet by 1 to 1.5 feet. How about 3 feet dia by 3.5 Z? That would be slightly larger than my printer... I chose a lot of my scaling by choosing 1 meter HWIN Clone slides. That was an arbitrary decision. 3 or 4 feet diameter, and a little more proportional Z, should be easily achievable with 2 meter slides (and appropriate frame size).
Yeah, it freaks people out that they are tall. As long as you are not trying to run a large farm that has multi-level shelving, or have some other ceiling constraint... if not, then so what?
Anyway, if you want to think about this at all, play with this calculator. Here's and example set for 3' diameter, and 3"4" Z:
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That heavy bed system may require something special to prevent it from dropping when power is cut (as well as some help lifting it in the first place). I used a Rino 30:1 worm drive to lift the bed with belts in my corexy machine, but it could easily be applied to lead screw drive, too. The worm gear prevents bed motion when the motor is powered off, which means it should be possible to resume a print after power failure, etc. The Rino has an integral NEMA-23 motor that's easily driven by a Duet board and very high quality gears.
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You can get nema 23 motors in low current version, they are rated 1.8A but must be powered with at least 24v PSU
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Instead of moving a large bed up and down, what about a Voron2 style XY gantry that lifts in Z. If I was going to do a printer that size, that's what I would do. http://vorondesign.com/voron2.1
For anything larger I'd probably do an X axis gantry that moved in Y and Z with stationary bed. Like a gantry crane.
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@mrehorstdmd definitely saved that page- probably a good idea regardless. thanks
