CncMill
Improvements ← Older revision Revision as of 07:57, 5 May 2026 (2 intermediate revisions by the same user not shown) Line 21: Line 21: '''Caution: The spindle may pulse on powerup and will pulse when you connect as the GRBL controller initialises.''' '''Caution: The spindle may pulse on powerup and will pulse when you connect as the GRBL controller initialises.''' === Tool Cooling and Dust extraction === We currently dont have any tool cooling or dust extraction system. Due to the MDF table, polycarbonate V wheels and sliding surfaces, we cant use cutting fluids & etc. so are limited to air cooling. It would be worth setting up a spindle mounted air blast nozzle to cool the tool and remove chips from the cut. Meanwhile a [[https://carbide3d.com/3d-print/er-collet-chip-fan/ ER20 chip fan]] on the collet does a good job of clearing wood or MDF dust from the cut at the expense of slinging it *EVERYWHERE* round the enclosure. Keep the doors fully closed if runninmg a chip fan! We dont currently have dust extraction. The spindle holder has a clamp on the right side to hold a dust collection nozzle. == Operating Instructions == == Operating Instructions == Line 177: Line 182: [[File:CNCRouterWiring2026.pdf]] [[File:CNCRouterWiring2026.pdf]] [[File:CNCmill XProV3.jpg|thumb|GRBL controller terminals]] [[File:CNCmill XProV3.jpg|thumb|GRBL controller terminals]] N.B. All limit switches are normally closed and open at limit. Z limit is wired via an optoisolator board to eliminate EMI from the spindle wiring. ===Spindle Control=== ===Spindle Control=== Line 324: Line 330: We could lift the X gantry make best use of the 160mm axis travel. The vertical frame members are 4x clear anodized V-Slot® Linear Rail 20x60 - 250mm We could lift the X gantry make best use of the 160mm axis travel. The vertical frame members are 4x clear anodized V-Slot® Linear Rail 20x60 - 250mm [https://us.openbuilds.com/v-slot-20x60-linear-rail/ SKU 290 - LP]. Substituting 350mm ones of a similar section would give us 160mm Z clearance under the Z endplate and over 100mm working height under a bit that can reach the spoilboard. We don't need the V-slot section as nothing travels on the vertical frame members so any 20x60 heavy duty euro 2020 system extrusion 350mm long will do. We will probably need to add diagonal braces down to the frame sides to maintain rigidity. [https://us.openbuilds.com/v-slot-20x60-linear-rail/ SKU 290 - LP]. Substituting 350mm ones of a similar section would give us 160mm Z clearance under the Z endplate and over 100mm working height under a bit that can reach the spoilboard. We don't need the V-slot section as nothing travels on the vertical frame members so any 20x60 heavy duty euro 2020 system extrusion 350mm long will do. We will probably need to add diagonal braces down to the frame sides to maintain rigidity. It may be worth adding a G-code controlled switched mains socket to support air blast cooling and/or dust extraction.