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Home of the Patented Diamond Sphere Grinding Cups
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Large Core Drill

Small Core Drill

Drill Prices:

3mm/ 1/8" $4.00 ea. 38mm/ 1 1/2" $15.00 ea.
4mm/ 5/32" $4.00 ea. 42mm/ 1 5/8" $16.00 ea.
5mm/ 3/16" $4.00 ea. 45mm/ 1 3/4" $18.00 ea.
10mm/ 25/64" $5.00 ea. 50mm/ 2" $20.00 ea.
13mm/ 1/2" $6.00 ea. 58mm/ 2 3/8" $22.00 ea.
16mm/ 5/8" $7.00 ea. 64mm/ 2 1/2" $25.00 ea.
19mm/ 3/4" $8.00 ea. 77mm/ 3" $30.00 ea.
22mm/ 7/8" $9.00 ea. 89mm/ 3 1/2" $35.00 ea.
25mm/ 1" $10.00 ea. 105mm/ 4" $40.00 ea.
32mm/ 1 1/4" $12.00 ea. 110mm/ 4 5/16" $45.00 ea.
35mm/ 1 3/8" $13.00 ea. 128mm/ 5" $50.00 ea.


This adapter is used in adapting a 6-inch flat lap in a drill press for the use of grinding edges of the beads or cabs you have cut out with the core drills.

Adapter




Bead
Just to show what can be made with the core drill and a diamond drill bit.


The drill adaptor is used to center the hole in the bead that you have drilled with a core drill. You drill about 2/3 of the way though your slab with the core drill then insert the drill adaptor into the groove and it will allow you to find the center perfectly each and every time. Drill just enough to mark the hole then remove the adaptor and finish drilling again only about 2/3 of the way though. After you have started as many beads as you want from the slab finish the core drill so you release the bead from the slab. Turn the bead over and use the adaptor to find the center from the backside and then finish drilling until you meet the hole from the other side. You have a perfect hole without any chipping around the edge.

These come in 3 sizes. Custom sizes upon request.
13mm List price $7.00
16mm List price $7.00
19mm List price $7.00
Special sizes request price quote


Drill Adaptor

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