STAR-M Auger Bits for Use with Electric Drill or Jaw Brace

Clean holes with flat bottoms you will achieve with these Japanese made auger bits, which can be used with jaw brace or power drill. They are of supreme quality made by Star-M in Japan and the favourite among Japanese woodworkers.

The rounded single spur of these bits cut a clean edge of the hole and the chisel-like cutting edge turns around the threaded center and removes chip by chip within the previously cut circle. The thread of the center is a bit finer than the thread of auger bits used in a hand brace only. View comparison! This is to make these bits suitable for hand and machine work. A bit with a large threaded center is unsuitable for power drills.

These Auger Bits are made for softwood and European hardwood. Not suited for extreme hard tropical wood! Use a jaw brace or a power drill with low speed. Lift the running power drill from time to time to help escape of chips and cool the bit. Do not force them - use only low pressure!

How fast can I run my power drill with these bits? Speed depends on the material of the workpiece and the diameter of the bit. If you are not sure, prefer the lower speed. In hardwood the speed should be generally slower than in softwood. Bits less than 10 mm you can run more than 1000 rpm, up to 20 mm reduce to 800 rpm and bits more than 20 mm should not be runned more than 400 rpm. Manufacturers often recommend in their catalogs a higher speed to give their products a more dynamic appearance. Find the best speed by yourself! You can increase the speed of the bits once you have more experience and feel about the material.

Short Auger Bits
The best choice when the holes are short and for narrow places.
1 chisel-like cutting-edge
1 single spur for clean edge of hole
Threaded center
Hexagonal shaft 6.35 mm (1/4 in.),
20 mm-bit-diameter and larger shaft 10 mm
Enlargements and instructions how to use
All measurements in mm

Diameter mm	Shaft mm	Total length mm	Cutting length mm	Order nr.	Price
3	6.35	80	45	312247	^✱€ 6.90
4	6.35	80	45	312248	^✱€ 6.90
5	6.35	90	50	312249	^✱€ 6.90
6	6.35	90	50	312250	^✱€ 6.90
7	6.35	90	50	312251	^✱€ 6.90
8	6.35	90	50	312252	^✱€ 6.90
9	6.35	100	60	312253	^✱€ 6.90
10	6.35	100	60	312254	^✱€ 6.90
11	6.35	100	60	312255	^✱€ 6.90
12	6.35	100	60	312256	^✱€ 6.90
13	6.35	120	70	312257	^✱€ 7.90
14	6.35	120	70	312258	^✱€ 7.90
15	6.35	120	70	312259	^✱€ 7.90
16	6.35	120	70	312260	^✱€ 9.50
17	6.35	120	70	312261	^✱€ 9.50
18	6.35	120	70	312262	^✱€ 9.50
19	6.35	120	70	312263	^✱€ 10.90
20	9	130	80	312264	^✱€ 10.90
21	9	130	80	312265	^✱€ 10.90
22	9	130	80	312266	^✱€ 12.90
23	9	130	80	312267	^✱€ 12.90
24	9	130	80	312279	^✱€ 12.90
25	9	130	80	312268	^✱€ 14.90
26	9	130	80	312269	^✱€ 14.90
27	9	130	80	312270	^✱€ 16.90
28	9	130	80	312271	^✱€ 16.90
29	9	130	80	312272	^✱€ 16.90
30	9	130	80	312273	^✱€ 24.90
31	11	130	80	312274	^✱€ 24.90
32	11	130	80	312275	^✱€ 24.90
35	11	130	80	312278	^✱€ 29.90
36	11	130	80	312280	^✱€ 30.90

Auger Bits in Standard Size
Same as above, but longer
1 chisel-like cutting-edge
1 single spur for clean edge of hole
Threaded center
Hexagonal shaft dependent on size, see table
Enlargement
All measurements in mm!

Diameter mm	Shaft mm	Total length mm	Cutting length mm	Order nr.	Price
6	6.35	160	90	312300	^✱€ 7.90
8	6.35	170	100	312302	^✱€ 7.90
10	6.35	190	120	312304	^✱€ 7.90
12	6.35	190	120	312306	^✱€ 7.90
13	6.35	190	120	312307	^✱€ 7.90
14	9	200	130	312308	^✱€ 8.90
15	9	200	130	312309	^✱€ 8.90
16	9	200	130	312310	^✱€ 9.90
18	9	200	130	312312	^✱€ 10.90
19	9	200	130	312313	^✱€ 10.90
20	9	210	140	312314	^✱€ 10.90
25	9	210	140	312319	^✱€ 15.50
30	9	210	140	312324	^✱€ 17.90
35	11	210	140	312329	^✱€ 27.90
38	11	210	140	312332	^✱€ 36.90

Auger Bit extra long
Same as above, but longest
1 chisel-like cutting-edge
1 single spur for clean edge of hole
Threaded center
Hexagonal shaft dependent on size, see table
Enlargement
All measurements in mm!

Diameter mm	Shaft mm	Total length mm	Cutting length mm	Order nr.	Price
10	9	600	500	312501	^✱€ 21.80
12	9	600	500	312503	^✱€ 21.80
13	9	600	500	312504	^✱€ 25.90
15	11	600	500	312506	^✱€ 25.90
20	11	600	500	312511	^✱€ 34.90
25	11	600	500	312516	^✱€ 43.90
30	11	600	500	312521	^✱€ 48.90

Auger Bit Handle with hex Chuck 6.35 and 9 mm
The auger bits with hex shank offered on this page can be used with this handle too if you do not want to use a power drill. Suitable for all auger bits with hex shank 6.35 mm (1/4 inch) and 9 mm.
Notice: Bits with larger shank than 9 mm do not fit! Bit not included!
Handle length 180 mm
Handle diameter 25 mm
Order nr. 312634

Price ^✱€ 11.50