April 27, 2019 at 10:55 am #98276
Is there a plan to make a 4th axis/rotary axis MPCNC? If not, there should be. That would be phenomenal.April 27, 2019 at 11:08 am #98278
There are already a few options on thingiverse.April 27, 2019 at 11:18 am #98283
I can’t tell you how many times I’ve told people “that’s next” in the last month or two…..Even just to swap the Y so it’s still a 3 axis machine would be cool. I saw some cylindrical laser etches not long ago…..very very cool. May have been here? Can’t recall. I’m sure it was though.April 27, 2019 at 11:54 am #98291
Hi Ryan. Thingiverse? It has a way to add a rotary lathe to the MPCNC machine? How do I find it?April 27, 2019 at 11:56 am #98292
I found this on Thingiverse! Thanks, Ryan. I never even thought this would be on there. https://www.thingiverse.com/thing:1877336
How is it controlled?April 27, 2019 at 11:57 am #98293April 27, 2019 at 11:58 am #98294
Here it is: https://www.thingiverse.com/thing:1877336
Now you have one like me!April 27, 2019 at 12:03 pm #98296
After that think how you will control it. Grbl (and probably marlin too) isn’t an option.April 27, 2019 at 12:03 pm #98297
I like this one better than the other: https://www.thingiverse.com/thing:1877336
It’s what I was looking for.April 27, 2019 at 12:04 pm #98298
Hmmmm Good point.April 27, 2019 at 12:10 pm #98301
Most people just substitute the rotary for an axis and use either firmware. There are a few threads about it.April 27, 2019 at 12:12 pm #98302
Then it still 3 axis cnc, just another kind of 3 axisApril 27, 2019 at 12:18 pm #98304
So for true 4 or more axis cnc you have to level up with pc – setup linuxcnc or paid mach3/mach4.
Or use very specific multi axis firmware. Only one free i know is TinyG/TinyG2 from Synthetos.April 27, 2019 at 12:19 pm #98305
Nope, rotary. In this case what would you use the other axis for?
4th-5th axis CAM is not easy to use, not easy on the wallet, and I am not sure I have ever seen either on the MPCNC. In regards to extra axis most that ask about it think it is the end all of CNC, not realizing you still have at least face you can not get to.April 27, 2019 at 12:23 pm #98306
I guess that Mike didn’t mean lathe-like cnc
It seems he asked about true 4 axis cnc modeApril 27, 2019 at 12:39 pm #98309April 27, 2019 at 1:12 pm #98315
No, I was wondering if a lathe could be added. Maybe the better question, now that It’s very complicated to make or too expensive to buy a rotary 4th / 5th axis, is it possible, using the regular MPCNC to take a carving file and cut on 4 sides to create a detailed rounded part?
I have Vectric Pro and Aspire. I’m learning the software but they’re both very new to me. Vectric let’s us download a trial version to try out with unlimited time on it. I downloaded both. I think Aspire is a little overkill but if I need a new income, might as well have it.April 27, 2019 at 1:14 pm #98316
Hi Guffy, It still can’t make larger items like table legs. That’s what I’d be using it for. The 5 axis machines are uber pricy. I’d love to have one but geez. I was thinking it would be better to buy a lathe, carve my basic shape on it, then move that piece to the MPCNC and finish cut it with the details. If I can turn the part 90 degrees and have the MPCNC carve on the rounded surface, that would be sufficient.
Like these bedposts. The spiral posts and the acorn thing at the top.April 27, 2019 at 1:19 pm #98317
I don’t know why a lathe couldn’t be set under the MPCNC and then using only the Z and X (or Y) axis, carve profiles in spinning stock. Sure, I bet much like most things I’ve discovered with this whole CNC thing it’d likely be quicker by hand with parting tools and gouges etc. But the key with CNC is perfect repeatability. Not sure how you’d handle coding the profile though. I’m oversimplifying the discussion I know.April 27, 2019 at 1:24 pm #98319
It still can’t make larger items like table legs. That’s what I’d be using it for.
Why not? You can easily do this with a rotary axis.
No, I was wondering if a lathe could be added. Maybe the better question, now that It’s very complicated to make or too expensive to buy a rotary 4th / 5th axis, is it possible, using the regular MPCNC to take a carving file and cut on 4 sides to create a detailed rounded part? I have Vectric Pro and Aspire. I’m learning the software but they’re both very new to me. Vectric let’s us download a trial version to try out with unlimited time on it. I downloaded both. I think Aspire is a little overkill but if I need a new income, might as well have it.
I am getting confused to what you are looking for exactly. In the machining space semantics is dependent on your age an experience so maybe avoiding rotary and lathe in your description will help. As an example now everyone is starting to get in a huffy if you call the MPCNC a CNC machine “technically all 3d printers and machines are CNC….”, then there is the 2.5D argument, Mill vs router, etc. For me it starts to get a little unclear.April 27, 2019 at 1:26 pm #98320
No, I don’t think you are. The prob would be getting Z to move around the perimeter as the lathe turns. One needs to know where the other is. I think they would have to be two separate jobs. Turn the piece to basic shape and size, then carve.April 27, 2019 at 1:33 pm #98326
Then let me complicate the conversation then ; )
In the ice carving world they make a lathe that uses a top mounted endmill (so hanging much like the MPCNC). The profile is a literal hard profile that sits on top of the machine and the tool rides along the profile moving and down as it rolls over the profile.
Here’s the kicker. On the old school ones there is no motor on the rotary. https://www.youtube.com/watch?time_continue=1&v=4gNF1xMJIQA (This guy is manually spinning it more than you need to TBH) Just the spinning of the bit itself turns the ice – kinda gains momentum at 1:35. You can see the hardboard profile on the top of the machine. This one https://www.youtube.com/watch?v=YNJg1jtLF4U uses a low speed motor to spin the ice ad the endmill is CNC controlled on two axis.April 27, 2019 at 1:35 pm #98327
As an example if your Y axis is now the spinning axis, you line up the X axis along the center line. There are a few videos with this on youtube with my machine and others. You would not want to move in the same direction as the “spinning” axis, as it is already doing that for you.April 27, 2019 at 1:38 pm #98329
originally, I was wondering if it could be converted to add a 4th axis. The conversation morphed into this. Per your comment, MPCNC is what you sell it as so isn’t it a CNC machine? As for the lathe. well, the 4th and 5th axis is a lathe that turns and moves around for all sides to be cut.
In the end, it got really complicated and I tried to simplify. It’s really not possible to do the 4/5th axis with MPCNC. It makes sense to divide the work into two parts, lathe work, and then carve work if it is possible to create the four sides to be cut repeatedly.
I’ve noticed that people use the machine to do everything. If you just have to cut off edges, use a table saw. Faster than a router machine. Buy the lathe which is significantly cheaper instead of buying a 5 axis CNC machine. The MPCNC isn’t a 100% do all machine. I was wondering if there was an upgrade and if it had the capability to turn wood. It doesn’t.
Sorry for the confusion. Hard to ask a question when you’re not sure what to ask or how to ask it.April 27, 2019 at 1:40 pm #98332
There’s a now famous quote on here that I’ve heard Ryan and Heffe use in various forms. Something about using a hammer instead of a marshmallow. I’m sure i got that wrong ; )
OctoPi is melting my mind…….April 27, 2019 at 1:41 pm #98333April 27, 2019 at 1:42 pm #98334
The limited size of the Pocketed NC limits the length of the piece. That enclosure doesn’t look long enough to do more than smaller pieces.
That’s why I was asking if the MPCNC could be upgraded to include the lathe function.April 27, 2019 at 1:49 pm #98335
Hahaha Right? Yeah. Sometimes old school is better than fancy crap do-all, which compromises to achieve marginal results. I’d love to figure out how to take something square and using the MPCNC, make rounded, carved posts. It’s all in the drawing files and set up. That’s the hard part, how to create the files so the MPCNC can carve them. Maybe it would have to be six or eight-sided. to carve the faces easily.April 27, 2019 at 1:49 pm #98336
I was wondering if there was an upgrade and if it had the capability to turn wood. It doesn’t.
But it does, we both linked options earlier? This is why I am I unclear to what you want. You also said it can’t do table legs but it can. We are missing each others point somehow, me and you do this often. When you say this can’t do something I am compelled to prove it can.
Do you have a link to a machine your are picturing? Perhaps an project you you are thinking the “rotary” stuff we linked earlier can not do without another axis worth of control?
Just to add more to this, you can control more axis with Marlin, we have easy access to XYZ, E0 and E1+, you just need to adjust your post processor to output correct Gcode.April 27, 2019 at 1:53 pm #98338
Hahaha Right? Yeah. Sometimes old school is better than fancy crap do-all, which compromises to achieve marginal results. I’d love to figure out how to take something square and using the MPCNC, make rounded, carved posts. It’s all in the drawing files and set up. That’s the hard part, how to create the files so the MPCNC can carve them. Maybe it would have to be six or eight-sided. to carve the faces easily.
Not long ago someone was posting photos of flip carved little birds. I bet that’d be the same way you could do it. Maybe look in the “Stuff I’ve made” threads. It really wasn’t long ago at all. Weeks if that I think?
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