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Thread: Tassie Oak Feedrate
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1st April 2021, 06:05 PM #1New Members
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Tassie Oak Feedrate
Hi all,
Im kinda new to CNC woodworking. Any suggestion for what bit to use and feedrate for cutting solid tassie oak timber, 25mm-35mm thick.
The machine is a Biesse Skill 1836.
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1st April 2021, 09:13 PM #2SENIOR MEMBER
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Spindle rpm available?
Bit size?
Straight flute. Upcut, down cut?
Number of flutes?
Depth of cut?
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2nd April 2021, 01:41 PM #3New Members
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11th May 2021, 03:22 PM #4
In general, whatever the diameter of the bit, I just halve it. So the depth of cut for a 12mm bit would be 6mm and the speed would tend to be about 6 metres a minute.
Just try it and see what works.Bob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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15th May 2021, 08:52 AM #5Senior Member
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That’s a very open question.
Chip size is important for heat management.
bit diameter affects this
i would turn to manual for a start, and then go start looking at feed and speed calculators online.
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23rd May 2021, 03:36 PM #6Taking a break
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Bit late, but I was running a 7.5hp Biesse Rover 24 (18k max rpm) for several years and my feed in solid timber with a 3-flute 12mm solid carbide spiral roughing bit was 4-6 m/min with a 3-4 m/min finish pass, so at 24k rpm you should be right with 6-8 m/min roughing and 4-6 m/min finishing. Using a roughing bit first will preserve the life of your finishing tool and require less cutting pressure; it's also better for dust extraction as it generates smaller chips.
Cut depth of half bit diameter is way too conservative on a machine like that, it can easily handle a depth of 2x diameter
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