Question 1

can I use a 7/16 drill bit with this?

Accepted Answer

The chuck in the Kanzawa guide is marked 3/8”.  I tried a 7/16” drill and no go.  When I tried a 7/16” drill bit from my Ryobi drill set which has a step down shaft at the chuck end, it fit and looks like it will work.

Question 2

My wife is a stone carver and sometimes needs a sculpture "pinned" to a base for display. Can I use this guide with a hammer drill on hard stone?

Accepted Answer

The chuck of the power drill is attached to the chuck of the Kanzawa tool, not the drill bit.  So the forces of the hammer drill would be acting on the chuck of the Kanzawa and while it is a fairly precise tool, I would not say  that it’s heavy duty.  Perhaps you could use a masonry bit and smooth action drill with the Kanzawa tool in order to drill 1/4 to 3/8 inch deep.  At that point, the path of the hole might be sufficient to guide the bit.  Set the Kanzawa aside, chuck the hammer drill with the bit and drill deeper.  Another possible thing that could injur the tool is the shaft of the chuck spins in a bushing that is somewhat open to overheating (there is an oil hole to lubricate the shaft) and stone dust could collect on the shaft causing damage.

Question 3

What is the hole diameter on the base.

Accepted Answer

Approximately 2-1/2” diameter.

Question 4

Will this chuck accept a 1/2" bit?

Accepted Answer

The product description indicates that it has a 10mm chuck so I'd say no as 1/2" = 13mm. You might be able to retrofit a 13mm chuck if you must use this bit; if you can use another bit the cheaper option is probably to look for a reduced shank drill bit (10mm to 13mm).

I don't have this guide but have something similar - I just fitted a 13mm chuck but am mindful that the rest of the system is designed around the 10mm chuck. Don't be too agressive with it and nothing should break!

Good luck.

ASIN	B085ZYTFKN
Best Sellers Rank	#627,582 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #822 in Power Drill Chucks
Brand Name	KANZAWA
Capacity	0.39 inches
Compatible Devices	Drilling Machine
Customer Reviews	3.6 3.6 out of 5 stars (46)
Global Trade Identification Number	04976226802017
Handle Type	thumbscrew
Included Components	Chuck Key
Item Diameter	10 millimeters
Manufacturer	Kanzawa
Manufacturer Part Number	K-802
Material Type	Aluminum
Model Number	K-802
Number of Items	1
Thread Size	M10

Kanzawa Drill guide DX K-802

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