Hoahh! Great news! Saving money for this one =)
I’d like to get one of these to mill 1/2″ acrylic. I’m not really interested in milling wood as much. Does anybody have enough experience with cutting acrylic to know if speeds/feeds are reasonable for a machine like this?
Yes this machine can do acrylic. With the dual motor now on the gantry it may even do aluminum, so long as the spindle can run low enough in rpms.
This will never cut aluminium cleanly. I’d be suprised it it cut acrylic at a reasonable speed. I think these should only be considered engravers, theres just not enough rigidity in it.
I cut 5mm and 1/8″ acrylic on my modded Shapeoko (basically it’s a somewhere between V1 and V2). It works. I’m not sure about 1/2 inch. Can you find two flute bits that long?
I’d guess a 1/8th endmill could do 10IPM at 2mm depth of cut with reasonable surface finish. Rigidity is the limiting factor though, in a proper machine you could probably run a quarter inch deep at 400IPM given proper chip clearing.
Mixing English and Metric units…. LOVE IT!!!
My tip – always get good quality cast acrylic. Extruded acrylic is very hard to mill as it melts too much. Cast acrylic is a joy to use on my Proxxon MF70. Extruded acrylic will laser cut but not as well as cast and it smells a lot worse. My wife shouts at me when I laser cut extruded acrylic and then complains that I smell bad when I come to bed. Sex is not an option.
IMHO extruded acrylic is the work of satan.
Very interesting! Thanks for the tip.
Seems really wonderful!
I can cut with a .125″ endmill at .25″ at 35 IPM with my Microcarve machine.
It’s a terrible idea, but it’s happened before.
More realistically I do .08″ DOC with a .125″ at 80 IPM and .14″ DOC with a .25 endmill.at 140 IPM.
I thought about the Shapeoko and super-sizing it but it’s rigidity could be questionable for anything that requires a lot of it.
I was doing corian at 45 IPM with a .125″ 2 flute spiral solid carbide endmill at .1″ DOC. That was taxing on my machine, I think something like this might buckle at that speed.
Well, I can put a 3D printer in my house and other than the ugliness of the machine, it’s fine.
I can’t put a CNC machine unless I want to deal with chips of plastic/wood/aluminium forever.
3D printers are noisy and leave behind more than a little extra plastic for all but the simplest shapes. Cleaning is a part of making.
It sounds as if you have never used a 3D printer.
In comparison, the 3D printer is much quieter than a CNC mill with the noise of a spindle and bit cutting through material.
I have one of each, the noise of the 3D printer is quieter than the Television and very tolerable, the noise of the CNC: not so much.
It seems to me that it would be relatively easy to build an acrylic box around the shapeoko base.
If you encase it, have a $50 vortex separator,a shopvac and suck it up when it piles up you’ll be good. I’ve had it accumulate in single jobs to the point the machine stalls from all the chips :)
That idea does depend on how well these things handle dust though since my machine uses bushings and not ball bearings.
Can these things be mounted to a wall while they’re working?
Judging by it’s belt system, most likely no. Unless you don’t care about precision :p
Timing belts are precise enough for inkjet printers. Some of those resolve to what 1,200 DPI?
You’d be putting extra torque on which ever stepper has to lift the gantry. You could put a counterweight, but then you’d have all that extra inertia to deal with. Technically, yes, you can do that, but it’s not going to work well.
Well, if we’re going through the trouble of mounting it on the wall, why not mount it upside down? That’d resolve the whole chip-clearing issue. :)
I like the way you think sir.
Will this work well for milling a pcb?
Probably not. A Dremel moto-tool is a pretty lousy spindle. Thing probably has a particle board base too. Most of these things do.
Looks like you can even on version 1
Gee, that’s a good price – pity about the shipping adding another third on…
I just went through the process and shipping to CT was less than $17. Maybe it costs more to get it to the moon.
I am not sure where CT is but it costs $87 to Oz…
Oz is pretty close to the moon.
Not really, the moon is actually much, much further over the rainbow than most people realize.
Hm… I’ve already got an Uno, a grblShield, a power supply, and a Dremel. Shall I or shall I not? Decisions, decisions…
yeah im still debating the mechanical kit, it just seems like theres a lot of mechanical bits you still need.. weird.
Was great and thought about it until I couldn’t find any European suppliers.
Eirinn: There is a European version, called eshapeoko:
I purchased an eShapeoko kit several months ago. These guys had all of the updates that the eShapeOko 2 has, but long long ago! I am very happy with the kit. They are out of the UK, I had it delivered to Spain.
If you went with a Proxxon or better spindle and so forth it might work. Runout on a dremel is TERRIBLE. I use a dremel for some sanding but past that and some grinding it’s bad news.
MDF is actually a great substrate for building a CNC machine if it’s done properly, and it’s fixed bridge. If your adventurous you can buy a BBox kit (you cut up the MDF) from Microcarve’s very own John, and it will be very nice for PCBs, fine lithos, and other things. I’m not associated with him other than after two years I’m still emailing him questions from time to time.
Wow thanks for this info, I just found the local supplier for Proxxon. I’ve preordered the Shapeoko 2 and you just saved me from spending on another Dremel
Shapeoko2 is very unreliable. Lots of modding to make things work properly. It’s a poor job for the SECOND version of a CNC machine. All they did was make a few mechanical changes from Shapeoko orignal. Advertised NEMA 23 motor operation which they act like they have never tested it 3 months after I bought mine. I suggest waiting for another option.
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