I’m trying to figure out why cutting linoleum works great with my 1/8 endmill and gives nice edges, but with my 1/32 bit it is fuzzy.
With 1/8 (carbide3d #102) @ 60IPM 12plunge .06/ deep I had great results.
When did my detail pass with 1/32 2 flute (this one) 30IPM 9 plunge .05 deep, the edges are fuzzy. I tried over riding the feed up 20% and down 20% at various speeds on the makita, with no improvement. Is this the wrong cutter for this?
The 1/8 SFM is 18000 (RPM) X .125 (diameter) X Pi / 12 = 589
The 1/8 Chipload is 60 (feed rate in IPM) / 18000 (RPM) X 2 (flutes) = .0017
The 1/32 at current settings is
SFM is 18000 (RPM) X .03125 (diameter) X Pi / 12 = 147
Chipload is 30 (feed rate in IPM) / 18000 (RPM) X 2 (flutes) = .0008
SO
If I want to increase the SFM, the max I can get to on the 1/32 endmill at 30K RPM would be 245 (only half of the 1/8)
And for the chipload i could double the feedrate to 60IPM to match. Would that be advisable to try? Is there something else i can do to increase the SFM?
In this case, will .03 DOC and 2 IPM make the difference? He did mention that not cutting as deep would help with chip clearing, but I’m thinking the type of linoleum we have might be more of a factor. I’ll have to do some more experimentation.
I have not worked with linoleum yet but what I have noticed with this small end mills that a slight increase in DOC can cause a lot of troubles. So I would start to reduce that first.
I’m definately going to try less DOC. There are some people on the inventables forums saying the gray lino that i purchased is not great for carving and can have this issue, but the tan lino doesn’t.