STUB DRILL BIT
$4.10
These are the best sizes, in general, to use for threading the mandrel into the wood. They have 1 3/4″ flute length and the total length is 3 1/16″. The standard wood bit is longer and tends to “wander” if it hits a tight wood grain. There may be some wood or especially acrylic and resins that it will be best to use the threaded inserts because they do not hold threads well and you will experience tear out.
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Anonymous –
I am pleased with the drill bit, it is just what I was looking for. The rapid delivery was very much appreciated, Ruth said 2 to 3 days and I thought, “yeah right, I’ll see it in a week or so.” Two days later it was in my mail box. Thank you. Great system.
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Dave Brandt –
The stubby bit results in virtually no deflection of the bit when drilling the hole in a bottle stopper. Accordingly, the result is a well centered hole into which to mount the blank to the bottle stopper mandrel.
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