See also my notes on using the Ooznest WorkBee.

Makita RT0700C

Table 1. Speed settings
No RPM

1

10000

2

12000

3

17000

4

22000

5

27000

6

30000

The manual recommends not to cut more than 3mm at a time when cutting grooves.

Feeds and speeds

The following data is based on my experience with a 1000mm x1000 mm WorkBee CNC and a Makita RT0700C router.

Acrylic

  • 17000 RPM

  • Feed rate: 2590 mm/min (102 in/min) Feed per tooth: 0.0762 mm (0.003 in)

For cutting acrylic I have found ~17000 RPM works the best. A slower RPM will melt the acrylic. I’ve used a feed rate of 2590 mm/min (102 in/min). A faster feed rate may work better. With a 6,35mm (1/4") two flute end mill the feeds and speeds are not that important. With smaller end mills, e.g., 1/8", it is important to get it right.

MDF

  • 20000 RPM

  • Feed rate: 3048 mm/min (120 in/min)

  • Feed per tooth: 0.0762 mm (0.003 in)

20000 RPM has worked well for me, but I’ve seen recommendations for a lower RPM.

Cutting 3mm per depth works well.

Aluminium

  • 10000 RPM

  • Feed rate 920 mm/min

  • Feed per tooth 0.046 mm