Easy build CNC - Low Price - 2838 - $375

grabcad

Here's my 3D CAD design of the new CNC.All the brackets can be milled on the 3018 CNC (even the original) with some clever techniques. The new machine is bigger, sturdier, heavy-duty, faster, and more precise. All the rails on the three axes are fully supported by SBR20 bearings, which are extremely sturdy. The stepper motors used are NEMA 23, known for their high torque and precision.The end of the video showcases how smoothly it cuts aluminum. Everything went very smoothly, from preparing all the parts to assembling the machine and milling at the end.The total cost at the end of this build is approximately $375 USD (to be generous).Here's a detailed list of the parts used in this project along with their costs and links to purchase them:- 3030 aluminum extrusion - quantity 5 - cost: $37.25https://www.zyltech.com/zyltech-3030-aluminum-extrusion-precut-length-up-to-2000mm/- NEMA 23 stepper motors - quantity 4 - cost: $71.80https://www.zyltech.com/nema-23-stepper-motor-3-0-a-1-9-n-m-269-oz-in/- Stepper motor drivers - quantity 4 - cost: $51.80https://www.zyltech.com/zyltech-stepper-driver-powered-by-hy/COUPON for Zyltech: SALES15 to save $24 .13Total from Zyltech.com: $148 - SBR20 1.2m rails set - 1 set - cost $42:https://www.ebay.com/itm/SBR20-1200mm-LINEAR-SLIDE-GUIDE-SHAFT-2-RAIL-4-SBR20LUU-Bearing-Block-CNC-Set/163227035690- Extra linear bearing block SBR20UU - 2 sets of 4 - cost: $34https://www.aliexpress.com/item/4000764607910.html- Wood router - 1 - cost: $30https://www.aliexpress.com/item/4000093011566.html- 2.5" U-bolt pipe clamp - 2 - cost: $3https://www.amazon.com/National-Hardware-N222-315-DP2190BC-plated/dp/B000BQUMVU/ - kfl08 T8 end support bearing block - 4 - cost: $5https://www.aliexpress.com/item/32849872990.html- RnRMotion MACH3 breakout board - 1 - cost: $14https://www.aliexpress.com/item/32843446275.html- Skateboard bearings - 4 - cost: $1https://www.aliexpress.com/item/32879599136.html- Lead screw T8 500mm - 3 - cost: $12https://www.aliexpress.com/item/32952885370.html- Lead screw T8 200mm - 1 - cost: $2https://www.aliexpress.com/item/32952885370.html- Couplers: 6.35mm to 8mm - 4 - cost: $3.5https://www.aliexpress.com/item/32868140452.html- Drop-in T nuts 3030s M6 pack of 50 - 1 - cost: $8https://www.aliexpress.com/item/32966023224.html- Power supply: 36V 1500W - 1 - cost: $33https://www.aliexpress.com/item/4000356150750.html- Relay module 5V - 1 - cost: $1https://www.aliexpress.com/item/4000356150750.html- Wires: $5- MDF board - 19mm, 13mm, and 6mm: cost ~$10- Bolts: I bought at Surplus City at $5/lbs - total cost ~$10The end result is a much better alternative to upgrade your 3018 CNC. With the larger working area, more powerful, and more precise, this machine will give you a lot more potential to make stuffs.I hope you consider this design for your next build.