I considering buying a CNC router table (max material cutting size is 1200mm x 800mm x 90mm). The website indicates the blade holder specfications are 3.175mm, 4mm & 6mm. Does this mean that the minimum router bit size I can use with this machine is 3.175mm? Basically, I want to cut narrow straight slots in a sheet of MDF and I need them to be as narrow as possible. Does this mean that this machine cannot cut slots more narrow than 3.175mm?
Finally, the sheet of MDF would be 30mm thickness. If the machine was to router/engrave completely through the sheet e.g to a depth of 30mm, would the cut be straight and clean with no tool marks on the cut sides of the MDF? Would a router bit with a thickness of 3.175 struggle to do this?
I’m going to be using a CNC router to flycut some MDF and I want to create a slightly rough surface. One machine I am considering buying has a spindle rotation speed range of 6,000 to 24,000 RPM. Does anyone know if it is somehow possible to set the machine to cut at a slower rate?
Do-n-it-4U. Re your answer. If I use a dimmer control, will it reduce the router travel speed as well? As I see it, for me to create a rough surface I either have to increase the travel engraving speed or reduce the spindle speed rate. Obvioulsy being able to do both would be ideal. However, if by slowing down the spindle rotation rate by using the dimmer, you also slow down the travel speed then I would imagine it would pretty much cancel the overall benefit.
I have a sheet of MDF (2500 x 1250 x 30mm) and I want to find out if it is possible to cut 3mm (or the width of the minimum size router bit possible) square grooves/slits across the MDF exactly 12mm apart. These grooves/slits would run the length of the MDF from top to bottom, but importantly would not run right to the edges of the sheet.
Basically this would mean I would end up with a large thick piece of MDF with very long slits (aproximately 1200mm long and 12mm apart) running right across the material.
I have spoken to a number of people who have suggested this is not possible because cutting the grooves/slits that close together would move the material or at least make it unstable to the point where the grooves/slits would not be straight.
Is this really correct? I find this very strange as I would have though that doing something like this would be incredible easy for a CNC router.
Also, would CNC router be able to cut the grooves/slits in one pass or would the machine likely cut the top section first and then lower the router bit to cut the bottom section of the grooves/slits?
The reason I want to use a CNC router is because I need the cuts absolutely straight and with hardly if any tool marks on the cut surfaces.
Importantly, the grooves/slits would be cut completely through the material so that you would be able to see through the MDF e.g like a big set of prison bars sort of thing.
