Cutting speeds

🚧	This is very much likely to change - I'm still learning every day!

I used a 500W china spindle for my tests.

Plexiglas (PMMA)

Melts at 160°C (even earlier than your printer's PLA or PETG).

• More on PMMA at wikipedia
• Great tipps at CNC-Step
• Engraving tipps at CNC-Step

These are the main challenges:

• Make sure the chips leave the flute so they can't friction weld (dust shoe, compressed air)
• Finding the highest cutting volume (diameter*speed*attack) while keeping the tool as cool as possible

cutter	diameter (mm)	speed (mm/min)	attack (mm)	plunge (mm/min)	rpm	cooling	notes
single-flute	2.0	300	30	0.5	10,000	none	Great result, more should be doable!
single-flute	2.0	400	30	0.75	10,000	none	Looks good, might be the limit before it shows.

Engraving

0.5mm deep TBD TBD

Poplar plywood (Pappelsperrholz)

cutter	diameter (mm)	speed (mm/min)	attack (mm)	plunge (mm/min)	rpm	cooling	notes
single-flute	2.0	300	30	2.0	10,000	none	Great result, more should be doable!

Pine plywood (Kiefersperrholz)

cutter	diameter (mm)	speed (mm/min)	attack (mm)	plunge (mm/min)	rpm	cooling	notes
single-flute	2.0	400	2.0	100	10,000	none	Works out fine, more speed should be possible.

OSB (Grobspanplatten)

cutter	diameter (mm)	speed (mm/min)	attack (mm)	plunge (mm/min)	rpm	cooling	notes
single-flute	3.175	500	0.75	80	10,000	none	Works out fine, more speed should be possible.
single-flute	3.175	555	1.00	127	10,000	none	Works out fine, more speed or attack should be possible.
single-flute	3.175	555	2.00	127	10,000	none	Works out fine, more speed or attack should be possible.

Examples =

12mm OSB, 3.175 single flute

GCode created with LaserWeb4.

• Left
  • Cutting speed: 555mm/min
  • Attack: 1.00mm
• Left
  • Cutting speed: 555mm/min
  • Attack: 2.00mm

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