Hey guys,
For those who've seen this post before, skip to the end: I'm starting a NEMA 23 upgrade! 😁👍
Technically, my CNC isn't new. I completed it a month or so ago and have been tinkering and trying to make it better and more rigid.
Profiles are 1000mm by 1000mm and I have 820mm by 790mm of workable surface.
Running off an Arduino Uno + CNC Shield + Raspberri Pi running CNC js, which I can run and send gcode to from any browser/device connected to my Wifi network.
I also made some changes to the router holder assembly to make it more rigid. Didn't have the original models, so made them from scratch in F360 using Thomas' printed models for reference.
Also changed the top of the gantry in order to get rid of the GT2 belt and run the Z-Axis lead screw directly off the Nema17. With the original design, my motor kept slightly budging forward under the pull of the belt. If anyone is interested, I can share the model. It's pretty much plug-and-play.
On to my question: I opted to use these collet extensions for the makita in order to get all the way down to my work surface without having to prop up my stocks when milling. However, I'm getting a LOT of oscillation and vibration due to the 1 1/2" length they're are adding. If I could get a 1" extension, that would probablty fix the issue. Problem is, I haven't been able to find one at all. It does seem that @Topsie is using a shorter one that could work for me. Could anyone direct me to it?
Cheers!
JR
I like the direct drive on the Z axis and the Raspberry Pi to control the Arduino. It would be great if you could share your upgrade part designs and if possible Step file. I have been 3D printing for a couple years but am a complete newbie on CNC control software. I could also use more details on what is configured on the Pi versus the Arduino. I assume you are using Fusion to create the G code files. I am using the hobbyist version of F360 and when I added the manufacturing add in it only gave me two weeks as a demo mode. I have not spent time looking into it but if i have to buy a license for 360 just for the manufacturing module I will probably look for other tool path software. Any comments or suggestions on how to get 360 manufacturing software under my hobbyist license or alternately, what other software I should consider. I will not be using any of this for commercial purposes so I am reluctant to invest in the commercial license. Thanks and Great post.
Hi @Jean-Robert Michel! Nice project you have here! I like it in almost full black, only with a few pieces in blue, it's beautiful like this! Mine is full black :)
Yeah, feel free to share all your mods, best place to do is in 3D design section, but you can share here if you want.
What if instead of using collet extension, you use the "_MoreDepth" files in the last revision of TopsCNC Heavy? I use this revision, and the Makita collet is 50mm far from workplan, and depending of the mill used, it will touch the workplan. ;) I notice you also use the biggest holder for the Makita, I use the shortest one, which allow to descend more than you, and haven't so far find any issue on rigidity or precision.
Topsie uses an ER-11 holder. He used a saw (angle grinder also possible) to cut the holder down to the optimal size by comparing it to a router bit.
https://www.instructables.com/id/Use-Any-Sized-Bit-With-Your-Makita-Dewalt-Router-S/
https://forum.v1engineering.com/t/added-er11-chuck-to-my-makita-rt0701c/7081
Please make the direct drive models available. Also post more fotos about your work surface, how you fix things, etc...this will help people.
@jadoglio
You can find my modified parts here in the Design section for the direct drive Z-axis. Be aware of the description as there are some restrictions to it.
As the for the CNC js setup, first off, the Arduino setup is exactly the same as what Thomas has described in his video (It's got Closed Captionning if your French isn't good). The only difference with my setup is that instead of connecting the Arduino to a Laptop/desktop through USB, it is connected to a Raspberry PI. The key lies in how to set it up. I will not lie – it is somewhat laborious. Here is a link to a page that describes step by step how to setup remote CNC js on Pi. I’m not an expert at all, but I was able to follow every step without necessarily understanding every part. Another good resource is this Facebook group you can join with a lot of helpful members.
I do use F360 for all my modeling/CAM and I’m on a free license. I’ve been able to use the design and manufacture sections without any issues. Not sure why you can’t. Might have to contact their support to know more. I know some people also use Google Sketchup, but I can’t speak to how good it is for our purposes.
@DavidC
I started printing the modified XAxis_FrontTop file and will try this approach. Thanks for the tip! Do you know how much x-axis range is lost with this assembly, since it's wider? I’ll start by keeping my modified direct drive z-axis assembly and see how far down it takes me given that my work surface is a bit higher than yours with my extra layer (vertical boards). If I were to move back to the original z-axis cart, I would have to make a thicker version in order to clear my z-axis motor (more explanation in my post in the design section)
@shoe
Many thanks for the links! It turns out I'll go with the approach mentioned above as I don’t know when this part would arrive from China and I have options I can act on right now.
Cheers!
JR
Hi @Jean-Robert Michel: I think you will loose 20mm on both sides (40mm total). ;)
Sounds good David! I'll be done printing and installing tonight. Looks like I'm going with the original spindle holder to get that 30mm back on the spindle holder, but I'm printing a thicker Z-axis cart in order to clear my motor. :) Pics to come later. ;-)
Hey all,
Update : « _moredepth » parts printed and installed, as well as shorter but thicker Z-axis cart to clear the direct drive motor.
A few update pics:
The graveyard, lol
A test (with rookie mistakes, lol).
Next:
Thanks all for the suggestions and links!
JR
Nice Job !!!
Very nice Job, what do you think about the more depth version ?
