- You must use a 1/8 or 3mm down cutting spiral router bit.
- Do not use this techniue on material thinner than 1/2" or 12mm.
- Use only on wood.
- If available use a dust shoe. If you find that the vacuum is pulling too much chipout of the slots then turn the vacuum off but leave the dust shoe in place.
- Do not do this on anything you cannot afford to remake should it suffer damage.
- If things are not cutting as expected then stop and sort it out before continuing.
- This is not a standard machining technique so use at your own risk.
I have found that following these simple rules have worked well for me over the years.
Where did I get the cutters for this project?
The cutter I used were purchased from this supplier on Ebay
Other ebay suppliers of 1/8" down cutting bits.
They are 1/8" in diameter single flute down cutting spiral bits.
The length of the cutting edger is 10mm ( 3/8") but anything similar eg 12mm(1/2") cutting edge would work just as well. There is little point having a longer cutting edge unless you are looking to cut your material in one pass. The flute area is weaker than the main shaft so a longer flute just weakens the cutter in my opinion. In fact since I do not cut more than 1/8th per pass any flute longer than 1/4" is a waste.