CNC router cutting MDF?
Question:I need to find a way of cutting a sheet of MDF which the dimensions 2500mm x 1250mm x 30mm, into strips 12mm wide.
The cut surfaces must be totally free from tool marks and the strips of MDF must be cut completely straight with 90 degree edges. I've obviously considered using a cicular saw but that would leave some saw marks on the material (importantly, it would not be possible to sand the MDF after cutting).
Is it possible to do this with a cnc router/engraving machine? Obviously I would lose a fair amount of material due to the cutting width of the router bit, but as the MDF is quite cheap I don't mind this.
Answers:
You might check with some local sign companies - I used to work for a company that made CNC routers that they would use to make faces and back of channel letters.
They usually have extremely sharp bits that will make a nice clean cut without the need for any cleanup. Maybe take some scraps to let them test out the type of bit that will cut your material the best. Playing with router RPM's and cut speed (inches per second) are also ways of gauranteeing the best results.
Yeah I suspect that you can get the results you are looking for with a CNC router. Another option would be to use a scoring table saw with high quality blades designed for clean cutting particle board, MDF, etc.
You could cut the strips 1/4" too wide at first & then trim them on the CNC engraver. That would make them managable & reduce the waste as well as reduce the load on the router (if it's a small one)
CNC Routers are used all the time in production shops to cut MFD sheets.
For a simple solution you may want to try a dremel tool. I've used their fiberglass cutting bit on particle board before with pretty good results - just keep the speed waaaay up to avoid splintering.
Also, the dremel has a router bit - might be worth a try.
A CNC router system would be perfect for your application; the shapes can be programmed in and the cut (up to 1" thick)
is not only precise, but very smooth on any material.
How about cutting it oversize with a circular saw and then finishing the cut edges with a fine tooth bit in a router?
hai antony
i m working as a designer for cnc router . i like to tell you that it s possible to overcome your issues by a cnc routing.there will be no marks of tool and ofcourse you will be getting a 90 degree angle with cnc router cutting.i m working in U A E .i like to know where you are from .if u need any help you can mail me.
regards
shameer
Cnc sounds like overkill unless you have ready access to one. Home Depot and Lowes type stores have Circle saw guides which you could use. They are sorta like an oversized straight edge that is 8 feet long and clamps on. Use a fine tooth carbide tipped blade and you won't leave noticable saw marks. The saw guide would also work with a router and bit.
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