Assembling a MPCNC Part 2 - Wiring, Belts and First Movement

[@pacosanchez671]

Very Encouragement in future projects

[@jstro-hobbytech]

I'm a maker but you're an artisan. This will ne my biggest project yet as far as cutting and printing so much and all the hardware. I usually make toys to sell for charity or custom lighting for people. I'd love to etch pcbs with one of these but I'd need a more powerful laser and temper my expectations as far as the quality. I'm mostly just making all through hole stuff anyway to learn theory.

[@MakingStuff]

Thanks for watching!

[@jstro-hobbytech]

So cool. I'm going to make a small one first with a 32bit main board with silent steppers and I'm going to have a pi running grbl and such with a monitor and a hole in the bottom for the cenentral air in my other workshop in my barn. I have an electronic workshop inside my house. I'm going g to buy a cheap rotary tool, cheap laser for etching photos or lines in wood for crafts. I'm just going to make my own end stops to save money. Once again, what a job

[@josephsheehan6450]

This is really cool. Looking forward to the next in the series.

[@MakingStuff]

Thanks for watching!

[@petermeiner3574]

Well done, Bob. Your explanations show really good, how clever are this design is. Thanks a lot from Germany.

[@MakingStuff]

Thanks for watching!

[@StephenBoyd21]

Looking good. I’m going straight to the next video.

[@StudioB7]

real diy.. thank you 4 your effort .) i learned many,,

[@stephanmoser7431]

And is it interesting to put some heatsink on the amplifiers ?

[@bjornwegener3233]

Perfect Stuff! thank you Sir for trying this out and taking the time to share. This is just what I needed.

[@latengocomoburro]

That all fine and dandy but how are you going to get a wide piece of wood underneath the machine if you have those extra supports that you installed? kind of defeats the purpose of building a long MPCNC doesn't it?

[@edguix]

latengocomoburro just put the piece in from the top

[@vizionthing]

It moves! Nice fix for the flexing. I am loving this project, I dont have a workshop :( time to go home and rethink my life.

[@MakingStuff]

You don't need a workshop. Just slide it under your bed. :)

[@vizionthing]

That where I keep my 3D printer parts

[@jackcoats4146]

On the LowRider CNC by the same folks as MPCNC, they suggest using stainless tubing the right size. It is available on Amazon at a reasonable price. It is a bit more rigid and thicker walls.

[@MP-mu1kw]

Thank you so much for sharing your experience on how to test and setup the mpcnc. I have a question, when you were running the tests. I noticed the the 4 corners were not as yet screwed into the surface. So at what point do you finally fit the screws to permanently fix the cnc gantry onto the base board?

[@stephanmoser7431]

Great video, sorry for asking, but can u tell me whitch display u use and how to connect it?

[@Watermelonpotato19]

Nice job, appreciate the thorough video!

[@mikeatencio5072]

I wish I could have followed you along pulling the wiring through. I'm stuck there.

[@josecorrales2756]

Hello, just getting into building my own MPCnc and I can’t find any 12v 12amp power supplies on Amazon, only 12v 15amp one. Do you think it would be okay with this setup?

[@Susipaddy]

Hi Bob! Can you please give the link for the support thing because it´s not in the description. Great you pointed that out.

[@MakingStuff]

Sorry about that. I added it to the description of the video.

[@jeffwelch2128]

I like the idea of adding support for the flex on the outer rails . are you getting any flex on the inner X Y rails ??

[@MakingStuff]

No, not that I know of.

[@zacke1807]

Where did you get the STL to print the Dual endstop mounts on the conduit?

[@MakingStuff]

I found it on Thingiverse.com.

[@msdesignru]

Like this project!

[@davidwaidelich5358]

when setting current on stepper drivers do you double current setting to accommodate both motors

[@nospam3409]

With the support brackets installed, you should check for flex half way between the support bracket and the corner. Checking it at the support doesn't really tell you anything.

[@bjornwegener3233]

Sir, could you tell me what are the maximum travel speeds you can achieve without the spindle installed?

[@randycatlette1528]

Do you have a link to your Limit switch mount, like it a lot? Thank ahead. And this by far the best build video series for the MPCNC.

[@MakingStuff]

I found it on Thingiverse. I may have put a link to it in the description of one of the videos but I'm not sure. Sorry I can be more specific but you should be able to search for it on Thingiverse if I didn't include a link. Thanks for watching!

[@xyzebruh1083]

I bet you could stuff wooden dowels inside the conduit or go a more expensive route and get solid steel round stock or maybe even (DOM) steel used to make roll cages from.

[@felixcat9455]

What sized all thread did you use? I noticed that the holes on the base piece are larger than the holes in the nut trap that goes in the conduit.

[@MakingStuff]

It is 1/4 inch all thread.

[@danielsLL]

vid helps sooooo much TY

[@shaunwhiteley3544]

Silly question, when you cut the cable mesh cover, how do you stop it fraying? I ended up putting tape round 😢, yours looks so much neater 😀. Thanks for sharing this build, really enjoying it! Cheers

[@MakingStuff]

Good question! I just hold the end in a flame for about half a second. A lighter,candle or blow torch will work. I guess I need to show that on the video.

[@boceephus6374]

What kind of wires did you use for your stepper motors? I purchased some 18/4 and its too big for the kinds of plugs and connectors. Did you stick with the connectors that's in the kit or did you purchase some separate ones?

[@MakingStuff]

I'm pretty sure it is 18/6. It's off the same spool as what I used for the plasma cutter.

[@boceephus6374]

@@MakingStuff How did you get that wire to work with the plugs then? I got the same board with dual endstops kit and all, but when I go to crimp the ends onto the wires it's too big and then the insulation is too large to fit side by side into the plug. I'm really wanting to use the larger 18ga wire but I'm stumped on how to get the wire to work the plugs on the Rambo 1.4 board. THANKS!

[@MakingStuff]

I found the box that the wire came in. It is actually 22/6 not 18/6.

[@boceephus6374]

​@@MakingStuff Awesome!!! That's exactly what i had in my cart on amazon! Thanks sooo much!! You;re the man!

[@rainbows99]

Could you machine a guitar neck with this?

[@MakingStuff]

If you built the machine long enough, yes.

[@bentoombs]

Love thingiverse. I print with Pla most of the time (mainly not to stink up my office) What did you print them in?

[@MakingStuff]

I used Cura 3.5

[@non7sens]

Would it be possible do a cheaper build by replacing rambo board with some arduino + chineese cnc v3 board and some tmc stepper drivers?

[@MakingStuff]

Yeah there are other boards on the MPCNC web site that are cheaper. However, they don't do the dual end stops. That's why I used a RAMBo.

[@HansenFamilyTrail]

Hello. I just built a MPCNC. I used the Arduino mega and RAMPS 1.4 board and I was able to configure dual end stops on both X and Y. I bought a 3D printer electronics kit from Amazon. It has been working great so far. Thank you for sharing your build with us.

[@citterly]

I've been watching some of your videos, nice work and thank you !!! I'm building a MPCNC right now, getting ready to wire it and add the RAMBO controller. What are your thoughts on using this device as a CNC plasma? I'm planning to try using it to run my small Miller Spectrum 125C. I've watched your plasma CNC videos as well, I like the recent THC and floating Z additions, you've saved me a ton of time already. Since there is no load on the tool when plasma cutting, it would seem the MPCNC should do OK. What are your thoughts?

[@MakingStuff]

I've seen other videos where the MPCNC was used for plasma so it should be doable.

[@citterly]

@@MakingStuff Thanks, I have as well and am hoping for good results. Your experience is a bit unique, having built a CNC plasma already. I was thinking you might have insights others are missing when evaluating the MPCNC platform. It's a pretty exciting path with potentially high value given the cost of implementation. Thx

[@MakingStuff]

Since there is no lateral force being put on the frame like there would be with a cutter, the frame should work well with a plasma torch. I don't know how you are planning to control the CNC. If you use LinuxCNC and stepper drivers you won't have any problems. If you want to use a RAMBo or RAMPS board you will have to figure out a few things like how to turn the torch on and off and how to hook up a THC.

[@citterly]

@@MakingStuff Thanks, I'm having those same thoughts about the RAMBO. I'll work that direction and see how it goes, hopefully it's no more difficult than triggering the hotend of a 3d printer.

[@MakingStuff]

@@citterly: You might be able to use the parts cooling fan port on the RAMBo. Try connecting a relay to turn the torch on and off.

[@Duraltia]

@04:17 Us over on the 1000mm X-Carve use Y-Rail stiffeners to prevent those rails from bending but because of their 2:1 ( H:W ) profile we're less worried about them sagging down like yours than we are of them bending in/outwards in case the Head moves along the X-Axis and thus pushing in that direction. IMHO the forces any of those machines will normally encounter are X/Y related, not Z ones so I'm inclined to say that you didn't exactly solve your problem with those center posts.

[@EdwardMcCreary]

Great stuff, I'll be assembling mine next week and this will be a great help. Can you post a link to the cable chain model, if it's public? Many thanks!

[@MakingStuff]

It's 3D printed from thingiverse.com.

[@peterpham4846]

Hi, How do you get your cnc setup to auto home? I got the same board as you but my can't do auto home. Its crashes every time I try it. Can you share your firmware setup? Great build BTW!!

[@MakingStuff]

Get the dual end stop firmware from the MPCNC web site. That's is what I used.

[@manuelmarasigan8990]

Thanks for the nice video and explained clearly. I would like to make one, can I request for thingiverse of this project?

[@MakingStuff]

Yes it is on Thingiverse.

[@weterwtr9373]

жду продолжения. круто

[@sotm6078]

What software are you using?

[@MakingStuff]

ESTLCam

[@alf3071]

Round tube isn't as rigid as rectangular tube

[@allted]

Lookin' good! Loving the series so far. The corners are not that big of a deal so I don't say anything on the last video. As for the flex, I finally found some numbers to use as a baseline. I was never sure before, www.v1engineering.com/forum/topic/burly-revisions/page/3/#post-72744. So ballpark 1.55kg at the bit (1/8") cutting aluminum at 8.4mm/s. No where near pushing down as hard as you can on one rail. That load is split between 1 or 2 rails depending on direction of cut from the gantry, that is where the flex actually is, the Z to XY gantry rails through the center section. The braces are a good thing (4x rail rigidity increase, but cut into usability) but I think you will find for wood they are overkill.

[@MakingStuff]

Thanks! This has been a fun project and you have done a great job on the design and all the info on the v1 Engineering web page. I'm experimenting with the supports because I plan on making this bigger for a future project that I am going to start working on next year.

[@kiyosenl.3889]

Cant you just use an arduino system instead of rambo and save some money? Whats the advantage of using RAMBo

[@MakingStuff]

Rambo has everything you need on the board like stepper drivers. If you use an Arduino, you will still have to buy those separate.

[@gesundmunter1138]

Hi Bob, my name is Michael. I´m from Germany and wanna say Thanks (!) for the Video Series on the MPCNC. Very helpful and informative....! I´d like to ask for the "thingiverse"-Link to the Cable Chain (and the Cable Chain Mounting Bracket), if possible. Great information, perfectly provided. I´m your Follower... Best greetings, Michael

[@MakingStuff]

Cable Chain = www.thingiverse.com/thing:11978 L-Bracket = www.thingiverse.com/thing:3360173 Glad I could help, thanks for watching!

[@peterwakefield915]

Wish the parts were injection mould instead of 3d printed.

[@barry99705]

Ryan originally designed it to be injection molded, but didn't go that route.

[@joaosalema6646]

.... the flex on one axis.... on the other its impossible

[@OlivierCR]

Looks awesome, I'm currently building the Root3 from rootcnc.com/ Currently working in the parts printing stage, then I'll get some Nema23 motors, RAMPS, and finally the most economically painful part: the spindle

[@MakingStuff]

Spindle shouldn't be too bad. Hopefully I'll have a video on it in a week or two.

[@OlivierCR]

@@MakingStuff my plan is to mill aluminium so the spindle I'm looking is in the range of $400~$600, I'll need a spindle with around 2.2kw

[@karlsiegl9631]

Hi, its a very good Video, the first Shows everything importantthank you

[@aniruddhkammar4342]

5th comment!!

[@MakingStuff]

Yeah, but you weren't first, sorry.