Archimedes Screw Drills |
Ancient design for drilling precise small holes
These simple hand drills are an ancient, perfect design for drilling very tiny holes with minimal fuss. Simple to use, just press down on the top with a fingertip while working the bushing up and down the spiral screw shaft.
Available in two styles. The first, in solid brass, is 4-1/2" long and holds bits from 0.040" to 0.060" in its collet. The second is also solid brass, nickel plated, and is a little longer at 7-1/2". It has two collets with a capacity from almost 0 to about 0.055".
The drills (not listed here) range from 0.014 to 0.055". Five sizes (.014", .027" .035", .047" & .055") are available in a packs of two each size.
Made in India.
 ( 1 customer reviews )
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- Friday, October 16, 2009 |
| Drilling Good Time |
| Reviewed By: |
Barry Shiffert (Jacksonville, FLorida) |
| I am pleased with both drills although it should be noted that the downward motion of bushing is against spring pressure. The larger 7.5" drill require some breaking in as well as oil to smooth out operation for a good hole. The smaller 4" operated well from the start with a light oiling. A specific identification of each collet capacity would have saved trial and error time as well as my obsessive engineering need for precision beyond my ability to achieve. In any case, I really like both drills. Quality is good and they do the job well.
Sincerely; Barry J. Shiffert |
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