Thank you !
I was about to build a modified Heavy with SFU1204s when I read your post and discovered your upgrades...
Wonderful !
I have a question that you may have already answered, but I couldn't find the answer.
Why didn't you use an SFU1204 for the Z axis as well ?
Is it a matter of weight ?
Very simple. It does not make sense. When the cnc is working, it is important to have as few tolerances as possible on the x and y axes. On the z axis, it's all about how much material you take away.
So the benefit would be zero.
Hey Kamil,
Könntest du mir evtl weiter helfen in meinem Thread
https://createforcuriosity.com/en/forum/topic/36Pm9oPW
Gerne auch auf deutsch 😊
Feel free to suggest improvements. If the Z axis with ball screw is better than with trapezoidal thread, I am interested.
I'm still thinking, but I think I'll go with 1605 for X and Y and 1204 for Z. I plan to adapt your modifications for that...
And, of course, I'll give my feedback !
Hi Kamil,
Thanks you so much or sharing your ideas and mods, they are very impressive! Please send me a link to your archive of your Fusion 360 files.
I am looking to upgrade form MPCNC to maybe a remix of TopsCNC. My usecase is mainly wood, acrylic and maybe bakelite or aluminium for milling plates for future CNC upgrades.
With everything having become very expensive and hard to source, I would like to keep the costs low as possible but add your ballscrew and linear bearings remixes. The size I had in mind was about 500x1000 (desktop size) with probably a Makita RT70xx spindle.
I was thinking of modifying the x-axis to use a 40x80 C-Beam to reduce the build cost but not
sure if it would have a negative impact on the overall performance/sturdyness and accuracy of the TopsCNC
design. Could do with your thoughts.
In one of your video's I noticed that you are using stainless steel wheels. What difference have you seen in the operation compared to the Delrin/Extream type wheels?
Thanking you in advance.
@Mike
You're invited, check your inbox.
C-Beam is better, unfortunately also much more expensive. I use a mix, top stainless steel wheels, bottom plastic. All stainless steel would wear the aluminum profiles too much. The stiffness is so good that I can also mill aluminum.
@Kamil,
Thank you, I downloaded the files and will go through them and decide on how I can implement your mods along with replacing multiple x-axis profiles with a single C-Beam. I will keep in mind the interesting point you made about the use of the SS bearings on the top for stiffness.
This is going to be the first time printing the cnc parts (previously with my mpcnc build, I had purchased from v1engineering directly). I am trying to figure out what are the best slicer settings I should use to get a balance between strenght/stiffness vs time taken to print/amount of filament used. I have a stock Ender 3 v2 printer and I have ordered sets of 0.2 and 0.6mm nozzles.
I have read others are using 0.60mm nozzle at 0.4 layer height, and 35% gyroid
infil for the bulk of these prints with PLA. Cutting print time in half and getting very good results. I would welcome any tips you can give on what has been your experience.
I have the parts with Ender 5, PLA, 50% fill, 50mm/s, 0.5mm nozzle. In the sliser I had set 0.4mm nozzle. So I got a little more stable layers.
@Kamil
Hi Kamil, I am really impressed with your work. I would like to realize your version of CNC with the students of the training center where I work. Can you please share with me the Fusion360 files you have created.
Thank you very much.
Gilles CAILLET
gilles.caillet@gmail.com
