Thread: First CNC build 2x1.5 meter
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17-04-2019 #1
So we are building a CNC Router.
And i am in the designing phase
.
The machine should primarily cut wood, but should be able to handle aluminium at a decent speed.
Electronics (had this from an earlier project)
Nema 23, 420 oz steppers 2 for the x axis and 1 for y and 1 for z with
Gecko 540 drive.
UC100
Spindle
2.2kw watercooled chineese thing from cnc4you.co.uk //thank you Clive S
Frame
Supported x side would consist of 120x80 mm aluprofiles
Legs will be 80x80 alu profiles
The gantry is where i have a few isssues i dont wanna make it to complexm i am considering adding another 80x80 profile so that it will be 80x240
Linier motion
sbr25 supported round rails for y and x
For z (400-500mm) I am considering square rails or the round unsupported since I have been told on another forum that the sbr may not be the best for Z
I have chosen the round rails due to the cost and from what I can figure out it has an accuracy of 0.01 mm over 1-2 meters.
rm2010 ballscrews for x and y
rm1605 ballscrews for z
A lot of people have advised rack and pinion but to me, it seems a more complex solution with a lot of issues,
I dont have a reason really other than I am in love with ballscrews (i know about whipping)
I have also been advised to move the ballscrew up so it is a little higher up than the sacrificial plate.Last edited by Dakn; 17-04-2019 at 03:54 PM.
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