DIY Homemade CNC part 3 - Fixed Gantry Frame Assembly
Рет қаралды 64,092
5 жыл бұрынExplained why I filled the aluminum extrusions with #epoxy #granite
I start putting all the pieces together to form the fixed gantry 3 axis #CNC and whats the next step
here is where I got the extrusions and brackets and Linear stages
linearactuatormotorized.name/c...
8020.net/
www.ebay.com/itm/Aluminum-ext...
Want to support the channel,------- by buying a reservoir you can help the channel grow and make you computer different
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@shawnlund 5 жыл бұрын
It looks like she will be a beast. Have you thought about using a second spindle mount to reduce the end play?
@radikult-custom 5 жыл бұрын
Shawn Lund that’s a good idea, the good thing about this build is that I can change parts if needed be, maybe even switch the spindle to a square one
@shawnlund 5 жыл бұрын
Radikult I have a couple of cnc machines but I have always wanted to build a rugged cnc router than could handle cutting aluminum easily, much like what you are building. The epoxy sand fill is going to be a huge improvement in reducing resonance, if I ever get around to building something I will remember this for sure.
@anderslarsson7123 5 жыл бұрын
Radikult Try to measure on the z-axis plate directly with the indicator, then you'll know where the flex comes from. I guess that adding side plates to the z could help too. Making the z plate become a U shape should increase stiffness of that part at least.
@shawnlund 5 жыл бұрын
@@anderslarsson7123 The Z axis plate is at least 3/8th aluminium plate connected to widely spaced rails and bearing blocks. If it's flexing at the plate itself there is something seriously wrong.
@radikult-custom 5 жыл бұрын
Shawn Lund so after tinkering with the Z-axis and checking that +/-.05mm flex I end up switching the Z-axis the other way around for a few reasons. 1st it’s super heavy 40lbs to lift it and hold. 2nd I notice that when I hit the spindle with my hand it “hums / vibrate” I was thinking maybe since I bought it used maybe it had something bad Now that it’s switch the other way, no “hum”, easier to move the spindle up and down and pulling on the tip of the spindle with about 30lbs of force I got 0.01mm to 0.02mm
@AdaptingCamera 3 жыл бұрын
First try, no sweating, no swearing, perfect fit... sure... :)
@thatoneguy99100 4 жыл бұрын
One of the best builds I've seen
@mhe0815 5 жыл бұрын
This is freaking gorgeous, amazing work! I wish I had the skill to design something like this...
@graffiti73 5 жыл бұрын
Awesome work 👍 looking very promising, can't wait to see the finished product and see some chip start fly
@adrianharrison5208 4 жыл бұрын
amazing build and well thought out
@foggycontacts3212 5 жыл бұрын
All that hard work is so worth it man, Love the vids!!!
@machine2747 5 жыл бұрын
Looks great! Just a suggestion, I used a nema 23 5:1 reduction gearbox on my Z axis. This keeps the Z axis from feeding down when the power is cut. It's been in place for about a year now and still working great. You can compensate for the reduction by adjusting the steps per inch in Mach3.
@CraigVanSickleAK 5 жыл бұрын
A sincere thanks for all the great content. You've touched on so many areas of interest and questions I've had researching the next CNC for my shop. Great vibe/energy on the videos/editing. Keep it up!
@koford 5 жыл бұрын
looking forward, thumbs up
@DIYTech21 5 жыл бұрын
NIce solid build
@AGN_Customs_LLC 3 жыл бұрын
Man, I stumbled into your channel and I love the content and how you work around the issues you encounter. You sparked my interest in building myself a CNC. I just ordered some Close Loop NEMA 34 Stepper motors and some NEMA 24 for starts. I was trying to locate the extrusions you used as base for your unit and could not find on 8020.net. Glad to see such craftsmanship! Keep it up! I'm subscribed and watching!
@radikult-custom 3 жыл бұрын
The extrusion are 40 series I think. The ones I have are here 8020.net/40-8016.html
@JP1AO 4 жыл бұрын
Awesome job on this so far. It does look like your use of the dial indicator is a little too straight on though. It should be more parallel to the surface you're reading.
@TrPrecisionMachining 5 жыл бұрын
very best machine
@jodyolivent8481 5 жыл бұрын
Looking good. You will definitely want the ability to change tools automatically. I love servos but I did pick up a pair of hybrid steppers to try on my upcoming Lathe conversion. I'll start on it (again) once Im done with my 4th axis.
@radikult-custom 5 жыл бұрын
Jody Olivent I like servos too but they cost 3 times as much as close loop steppers. That’s why I’m considering them lol
@jodyolivent8481 5 жыл бұрын
@@radikult-custom that's the same reason I didn't use servos for my lathe. I'm excited to see how the compare to both servos and regular steppers.
@ryanrosser8520 5 жыл бұрын
The pitch on the ballscrew is probably why the spindle falls because of it's own weight. Really nice build though. Thanks for uploading!
@tonymagri2846 Жыл бұрын
hi just idea is to buy a small stick magnet that fits in the tee slot and us that to bring the tee nut into position to bolt it together that's what I use very easy and quick
@DiscoverRajivVlogs 5 жыл бұрын
I would like to see a comparison of your gantry vs fix gantry CNC later on.
@radikult-custom 5 жыл бұрын
Rajiv kumar I’ll try to add that maybe on a future video
@bransonlariscy4660 6 ай бұрын
After watching further into the video what I thought was your z axis was actually your gantry lol. anyways it looks like it would make a nice z axis for my build
@bransonlariscy4660 6 ай бұрын
Did you build your z axis? It looks nice and exactly what I'm looking for. if you purchased it can you send me a link please?
@IceTurf 5 жыл бұрын
I find the side T-nuts are not as strong and can sometimes get locked in the channel, not tightening on the aluminum channel itself...
@mkian11 5 жыл бұрын
did you try for metal working with it?
@gangleweed 3 жыл бұрын
Hi.....if you wanted to make it more rigid in those sections you could have inserted solid steel bars ........scrap rebar comes to mind....and epoxy glued them in the middle of the extrusion.....that would give it more mass without breaking the bank.
@CyberDenSystems 5 жыл бұрын
Looks awsome man!! Much beefier then mine. What steppers are those? They look like the same ones I had at first. I had to switch them out for stronger ones cause they kept stalling.
@radikult-custom 5 жыл бұрын
CyberDen Systems they are 300oz old steppers from my very first cnc, most likely it will stall trying to lift the z axis lol but I’ll just them for testing purposes
@JoeMalovich 5 жыл бұрын
small magnet on a stick for lining up the t-nuts.
@ovais909 5 жыл бұрын
Aluminium is not magnetic
@JoeMalovich 5 жыл бұрын
@@ovais909 t-nuts are
@opendstudio7141 4 жыл бұрын
Have you seen the MASSO G3 controller by any chance. Those Australians are always doing things that impress me. 😊
@mariorodriguez1455 4 жыл бұрын
Open D Studio not in person. But it I heard that it’s really good.
@TheWizardOfAhhz 5 жыл бұрын
Clearpath all the way man
@TristanJCumpole 9 ай бұрын
I genuinely appreciate this series as it's helping me with decisions on my own gantry CNC. I have to ask, can the Z-axis be back-driven? I noticed in part 2 that the X and Y could be moved around without having to spin the screw....if the Z-axis can be back-driven (it looks a similar setup?) doesn't that mean the head can crash down under its own weight?
@radikult-custom 9 ай бұрын
Yes the Z axis can crash under its own weight when the power it’s turn off. It is way I put a “tool balancer” to prevent that from happening. You could use an air spring to do the same.
@TristanJCumpole 9 ай бұрын
@@radikult-custom I've not encountered air springs before. Are they similar in principle to a counterbalance, or do they act as a "soft drop limit" for the Z? Did you select a screw type that can back-drive for any specific overriding reason? edit: I missed this exact same discussion at 11:20 🙂
@beachboardfan9544 4 жыл бұрын
The part you pickup at 3:32 did you build that or buy it? Would love to find a complete axis like that, it would save a ton of time.
@radikult-custom 4 жыл бұрын
Beach&BoardFan I found it on eBay (used) but really good condition You could find similar ones if you search for “THK or NSK Linear ballscrew actuator”
@beachboardfan9544 4 жыл бұрын
Appreciate it!
@BGraves 5 жыл бұрын
Just use a telescopic magnet from the auto parts store to place those t nuts
@radikult-custom 5 жыл бұрын
Brian Graves lol I got one those somewhere, I’ll try that thanks
@Hofcake 5 жыл бұрын
If you use lead screws instead of ball screws on the z-axis they tend not to be as easily back driven so you shouldn't need springs or anything
@IceTurf 5 жыл бұрын
How did you go about cutting it?
@radikult-custom 5 жыл бұрын
Maple_Dude the aluminum extrusions? I cut it with a band saw or a table saw, if it’s small pieces I use a chip saw too. But the blades have at least 80 tooth
@CryoftheProphet 2 жыл бұрын
What did you use the cut the aluminum extrusions perfectly square? Chop saw??
@radikult-custom 2 жыл бұрын
Yeah, a chop saw, If you buy the extrusion from “80/20” the cuts are really good
@CryoftheProphet 2 жыл бұрын
@@radikult-custom mind if I ask where you got your linear rails with those granit bases and ball screws? I have a pretty similar designed fixed gantry system on vention with the same extrusions you have but I was hoping to find plates that already have the linear rails mounted to them and ball screws as well. Thompson makes them but they are like 1500 a piece which is way too expensive.
@radikult-custom 2 жыл бұрын
@@CryoftheProphet I found them on eBay, but they were one of a kind pieces.
@CryoftheProphet 2 жыл бұрын
@@radikult-custom Thank you, you really have inspired me with your build, I really admire your drive and ingenuity
@KevinNguyen-zn4vv 2 жыл бұрын
Looks like a tank. Do you think it's kind of overkill for a small desktop CNC?
@radikult-custom 2 жыл бұрын
Well it depends on what you planing to use it for. If you going to cut soft materials and the quality of the cut don’t matter to much then yes it’s a overkill. If quality of the cut is very important, then no, actually if the frame was made out of steel or granite would be better
@majortw 5 жыл бұрын
Have you allready tried Servos like the JMC ones?
@radikult-custom 5 жыл бұрын
MajorTwip I have the clear path servos from teknic on my other cnc, I have not try the JMC
@AVSIT1 5 жыл бұрын
@@radikult-custom Are you satisfied with the Teknic's performance?
@radikult-custom 5 жыл бұрын
AVSIT1 yes very, no noise, high torque and speed, and everything build into the unit, the only down side it could be the price.
@AVSIT1 5 жыл бұрын
@@radikult-custom was there an advantage over SD (stepper controlled) over the SC for you or preference?
@radikult-custom 5 жыл бұрын
AVSIT1 I got the SDSK because those are the ones for “step and direction” for cnc machines. The others SC is for different applications
@khaled4282 4 жыл бұрын
It cant mill metal becuz z axis is not corrected
@dinxsy8069 5 жыл бұрын
Didn't realise you lived in the US, shame as the products look good. Buying from the UK is a nightmare, import taxes are killer.
@radikult-custom 5 жыл бұрын
Dinxsy I know, I have shipped to the UK and worldwide and I change the value a bit to help with taxes but still shipping can be expensive
@Z-add 5 жыл бұрын
I'm confused about epoxy granite. There doesn't seem to be lot of accurate info about it. Most of it is by youtubers doing trial and error.
@radikult-custom 5 жыл бұрын
MySchizo Buddy you are correct. Since big companies don’t give their secrets away. As a diy cnc, I use it for the added weight and dampening some vibrations
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