Question 1

I would have thought that drill bits would gradually ream out the holes?

Accepted Answer

You would think so, wouldn't you.  But I have been using mine for a couple of years now and it is still working as new.  I think the reasons are:  1) There is obviously a need for a very small clearance between the OD of the drill bit and the ID of the Gator hole, in order that the drill doesn't simply bind in the hole.  The clearance allows the drill to pass through the Gator readily, but still provides the directional accuracy you need for most jobs.   Secondly you start drilling only when you have actually sunk the drill onto the workpiece surface - so the main cutting tip of the drill isn't in rotational contact with the Gator's internal surface.  Thirdly, I suspect the geometry of a twist drill is primarily designed to create the initial chip at the tip of the bit, and then enable that material to move up and away from the workpiece.  It is not designed to 'dig in' to the sides of the hole. Although you can open out a hole (especially in soft material) by willfully 'waggling' the drill to engage the shank sides with the inside of the hole, my guess is that, unlike a reaming tool, the twist drill geometry isn't set up to cut into the sides.  And perhaps that last point is mainly why it doesn't seem to wear much.   Hope this helps.

Question 2

Which country is this manufactured in please? Does it actually say anywhere on it or or the packaging? Thanks.

Accepted Answer

Hello, The V-Guides are manufactured in the USA and it states this on the packaging and the V-Guide itself.

Question 3

What's the depth of the 3.5mm hole?

Accepted Answer

The V-DrillGuide is 22mm high, as in, if it is standing on a flat surface. The hole depth to the V is 17mm, as in, if it is placed on a corner or round.

Question 4

are slot sizes same as intended hole diameter or wider?

Accepted Answer

The V-DrillGuide holes are precisely machined to fit the corresponding drill size so are the intended diameter.

ASIN	B00CYNOFM0
Best Sellers Rank	72,481 in DIY & Tools ( See Top 100 in DIY & Tools ) 168 in Drill Accessories
Brand	Big Gator Tools
Colour	Silver
Compatible Devices	Drills
Customer Reviews	4.6 4.6 out of 5 stars (1,298)
Drilling Capacity Metal	9.5 Millimetres
Drilling Capacity Wood	9.5 Millimetres
Global Trade Identification Number	00613103042763
Included Components	17 different sized holes
Item Weight	9 Ounces
Manufacturer	Big Gator Tools
Manufacturer Warranty Description	Lifetime warranty does not cover abuse.
Material	Nickel alloyed steel
Maximum Chuck Size	9.5 Millimeters
Model Number	MDG1000NP
Number of Items	17
Number of Packs	1
Part Number	MDG1000NP
Power source	hand_powered
Special Features	"v-groove" bottom to be used on corners or round edges, alignment marks on either side of drill guide, embedded hole numbers to easily see numbers on top of v-drillguide, ground base to use on flat surfaces, heat-treated steel for durability; no wear-and-tear with drills
UPC	613103042763
Unit Count	1.0 count

Big Gator Tools MDG1000NP V-Drill Guide

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