Dieter Schmid's Fine Tools
FISCH Forstner Bits inch

Fisch Wave Cutter Forstner Bits - Imperial

Fisch Forstner bits with Wave Cutter technology produce very clean holes in double quick time. The scalloped Wave Cutter edge reduces the tendency of bits of this kind to cause irreparable damage to your workpiece by snagging in the wood and then skidding across the surface when you start to drill a hole with a handheld drill. Another big benefit is that you can resharpen the bits by hand up to 30 times before having to replace them. Fisch bits are made in Austria.

They couldn’t be easier to use! In our experience they cut cleanly and, if kept sharp, there is little risk of tear-out when starting a hole, even if the drill speed is not optimal for the material. The Fisch Wave Cutter also needs the least pressure of all Forstner bits for drilling. That is why we recommend it when you are drilling freehand and want to end up with a clean and accurate job. Less pressure when drilling freehand means less risk of the bit skidding across the surface, less risk of breaking through the workpiece and generally fewer problems.

Sharpening Wave Cutter Forstner bits
Read what our colleague Anthony has to say about Fisch Forstner bits.

Our colleague Anthony tested Fisch Forstner bits in 2014 and this is his report: I have been using Forstner bits for years, mostly in softwood, with great results. They offer a really clean cut, with a flat bottom. Ideal for drilling out mortises, for example.

Recently I was given a set of Fisch Wave Cutter Forstner bits to test, and I must say, they are the best bits I have ever used. Over Xmas, I built a wooden horse for my children using larch and two rubinia tree trunks. I needed to drill four 50 mm holes for the legs and several 25 mm countersinks for the coach bolts - to hold the head, neck and body together.

The 50 mm proved a big problem for my other Forstner bits with lots of smoking and very little progress (rubinia is notoriously hard when dry). The Fisch Wave Cutter bit cut into the wood without any fuss, drilling to 80 mm deep - no smoking and very little heat build-up at all. Waste clear-out was also excellent. The Wave Cutter design sure works.

Using the Fisch bits on sap wet larch was also unproblematic. A clean cut and no heat build-up.

I can thoroughly recommend these bits as a must have for any workshop, and the set price is an absolute bargain.


FISCH Wave Cutter Forstner bits - imperial Characteristics: Centring point, wavy periphery cutting edge, 2 lifters and stepped cylindrical shank, premium quality.
RPM Table:
Diameter Softwood Hardwood
up to 10 mm 2400 2000
up to 16 mm 2400 1500
up to 25 mm 1800 1000
up to 35 mm 1600 900
up to 70 mm 1000 500
Diameter
inch
Diameter
mm
Shaft
mm
Total length
mm
Cutting length
mm
CodePrice
1/4 6.35 6.35 90 55
Code 316177CartPrice € 12.90
3/8 9.52 6.35 90 60
Code 316178CartPrice € 13.50
1/2 12.7 6.35 90 60
Code 316179CartPrice € 19.95
9/16 14.29 8 90 60
Code 316180CartPrice € 19.95
5/8 15.88 8 90 60
Code 316181CartPrice € 19.95
11/16 17.46 8 90 60
Code 316182CartPrice € 21.50
3/4 19.05 9.5 90 60
Code 316183CartPrice € 22.50
Diameter
inch
Diameter
mm
Shaft
mm
Total length
mm
Cutting length
mm
CodePrice
13/16 20.64 9.5 90 60
Code 316184CartPrice € 22.90
7/8 22.23 9.5 90 60
Code 316185CartPrice € 22.90
15/16 23.81 9.5 90 60
Code 316186CartPrice € 23.80
1 25.4 9.5 90 60
Code 316187CartPrice € 24.90
1 1/8 28.58 9.5 90 60
Code 316188CartPrice € 26.50
1 1/4 31.65 9.5 90 60
Code 316189CartPrice € 27.90
1 3/8 34.93 9.5 90 60
Code 316190CartPrice € 32.90
Diameter
inch
Diameter
mm
Shaft
mm
Total length
mm
Cutting length
mm
CodePrice
1 1/2 38.1 9.5 90 60
Code 316191CartPrice € 35.95
1 5/8 41.28 9.5 90 60
Code 316192CartPrice € 37.95
1 3/4 44.45 9.5 90 60 Currently not in stock!
Code 316193Cart Price € 44.90
1 7/8 47.63 9.5 90 60
Code 316194CartPrice € 45.90
2 50.8 9.5 90 60
Code 316195CartPrice € 51.90
Extension for Wave Cutter Forstner Bits with Shank 3/8 inch

Getting hold of extensions for imperial drill bits used to be virtually impossible, because the drill bit shanks are mostly 3/8 inch ≈ 9.5 mm in diameter. Metric extensions are thus of no use for these drill bits. This new extension does away with the restricted drilling depth associated with imperial drill bits.

  • Drill bit holder 3/8 inch (approx. 9.52 mm)
  • For all Fisch Forstner drill bits 3/4 inch to 2-1/8 inch diameter
  • For all drill bits with a 3/8 inch shank and 3/4 inch (19 mm) minimum diameter
  • Outside diameter of drill bit holder 18 mm
  • Hexagonal shank 9 mm
  • Shank middle section D = 12 mm
  • Total length 330 mm
  • Requires hex key for 3 mm grub screws (not supplied)
Code 316174CartPrice € 25.90
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