Z axis for CNC mini mill

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This Is A Model For Making A Z Axis For A Cnc Mini Mill. I Had A Milling Table, Dremel, Cnc Shield And Some Motors Lying Around And Saw A Mini Cnc Mill In It. I Only Needed A Z Axis So I Made One Out Of Square Steel Tube (20X20Mm). I Connected Them With 3D Printed Parts Of Abs. It’S Purple Because I Had A Lot Of That Color. The Spindles And Guiding Rod Are M8. Using Model “Nema 17 Bracket For Milling Table” I Connected The Steppers To The Milling Table. For These Brackets Please See: Https://Www.Thingiverse.Com/Thing:2720575 So With These Components I Made This Mini Mill. Because The Table Can Only Move 80 By 80 Mm It’S Not Very Big. But Of Course If You Would Use A Bigger Table, You Can Make The X And Y Axis Bigger. As A Controller I Used An Arduino Uno And A Cnc Shield With Drv8825 Drivers And Grlb Python Script Found On The Github (Https://Github.Com/Grbl/Grbl). In This Case I Just Used Universal Gcode Sender For Sending The Gcode (Https://Github.Com/Winder/Universal-G-Code-Sender). The Gcode And Paths Are Created Using Inkscape (Https://Inkscape.Org/En/) First Test Was On A Mdf Plate, But Worked Not So Well Because I Do Not Have The Right Milling Bit For The Arduino. Second Test Was On An Acrylic Plate, But The Milling Bit Did More Melting Than Milling :-). I Suppose I Had To Use A Cooling Liquid. Third Test Was On An Aluminum Plate And That Worked Better Except That My Mini Dremel Bit Flexed A Bit During Milling. The Fourth Test Was Milling A Pcb And It Worked But I Have To Improve My Gcode. So The Mini Mill Works Very Well. The Motors Didn’T Skip Any Steps Due To Emf Frequencies Coming Of The Dremel Brushed Motor. I Did Use A Diy Mains Filter For It. If You Are Interested In This Mains Filter Feel Free To Ask. As A Backup I Even Had A 1:1 1Kva Transformer Ready, But I Didn’T Need It. I Didn’T Use End Switches Because The Can Cause A Lot Of Emf Issues. Also I Didn’T Shield Anything, So Less Is More :-) For Micro Stepping I Had To Settle On 4 Micro Steps For The X And Y Motor Avoiding. If You Have Any Questions Feel Free To Ask :-)

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