Reply with QuoteHow'd it go?Originally Posted by alevitt53
Re: Spoilboard surfacing with Amana RC-2251
Now that makes sense. My spoilboard needs resurfacing so I'll give that a try.
Thanks!!!!
How'd it go?
Re: Spoilboard surfacing with Amana RC-2251
There seems to be a minimum depth to get good results from Amana's RC-2251 cutter in MDF. I've had no trouble with using it at shallow depths in softwood.
But with MDF, it burns almost all the time if I take less than a 16th of an inch.
I'm using a Shopsabre Pro 408 with a 9.6HP HSD spindle. I get perfect results at 12000rpm and 450ipm. I would expect I could push it to 550 or even 600.
I stepover 95% of the bit diameter, and I start the cut at full depth, off the spoilboard.
I'm somewhat annoyed that I can't skim cut 0.010 with this bit. It's wasteful not to be able to do that. I will probably buy a simpler version at some point, without the bottom cutters, which are what creates the depth limitation.
Re: Spoilboard surfacing with Amana RC-2251
I had the same problem. To solve.....Start the cutter off the board, run the length (or width) and make the next cut coming back the other way the same.
That way you are never pushing on the bottom of the bit and it won't burn up.
Re: Spoilboard surfacing with Amana RC-2251
That may not be a fault of the cutter. It may be a 'fault' of the MDF, which is fibrous and soft like cardboard. Unless the blades are extremely sharp, a very shallow cut can simply push the fibres into the underlying material. naturally, that causes friction and burns.
You could try a fly cutter - with a very sharp blade shaped like an aluminium cutter. Think slicing, not ploughing.
Do not blame the tool; consider instead whether it is the right tool for the job.
Cheers
Roger
Re: Spoilboard surfacing with Amana RC-2251
When they advertise it as a tool for surfacing MDF, can you then blame the tool?
Having said that, I don't think the bottom cutters are needed at all for MDF.
I plan on buying their new RC-2255 to try at some point.
Gerry
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Re: Spoilboard surfacing with Amana RC-2251
A good point Gerry.
But it is always wise to consider the claims of the marketing department carefully, rather than blindly accepting them.
The observation seems to be that such a cutter does NOT work too well when making shallow cuts into MDF. One can understand that.
So - should one blame the tool - or the user?
Cheers
Roger
