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Frequently asked questions


1. Who makes the drill guides?

Big Gator Tools are the direct manufacturers of the V-DrillGuides and V-TapGuides.


2. How many drill and tap guides are available?

We stock five drill guides and two tap guides:

  • three standard (imperial) drill guides

  • two metric drill guides (we are working on more)

  • one standard (imperial) tap guide

  • one metric tap guide

Contact us for availability of UNC and UNF tap guides.


3. Do you offer metric versions of the tap guides?

Yes! We now offer one metric tap guide, as well as two metric drill guides (3–9.5mm and 10–14mm).


4. Can I use a tap guide as a drill guide?

We don't advise it; the tap guide is sized for tap diameters, whereas the drill guide is sized for drill bits. There is a big difference, and you will find that using the tap guide as a drill guide may lead to inaccuracy.


5. What’s the largest hole size available?

The largest hole size is 14mm. This is part of the Metric V-DrillGuide.


6. What’s the smallest hole size available?

The smallest hole size is 3/64”. This is part of the Mini V-DrillGuide.


7. What is a “V-groove” on the drill and tap guides?

This is a 90-degree design that runs through the whole guide. The "V-groove" can be found on the bottom of the guide. It ensures perpendicular alignment on round and cornered material.


8. What is a V-TapGuide?

The V-TapGuides can accurately guide hand-tapped threads on insides of holes in order to accept a machine screw or bolt. You can also use V-TapGuides to fix damaged internal threads, or to cut new, larger threads.


9. What's the difference between a V-TapGuide and an STI V-TapGuide?

Whereas the V-TapGuide was designed to guide commonly used ground threaded taps for their called out bolt size, screw thread inserts (STI) V-TapGuides were made to guide oversized ground threaded taps.

Please note that standard taps will not work with the STI V-TapGuides.

Also, while the regular V-TapGuides are offered in either standard (imperial) or metric sizes, the STI V-TapGuides come in either coarse or fine thread sizes.


10. How do I use a tap guide?

 The V-TapGuides we stock are so easy to use. Simply:

  • Put the tap guide on a work surface with the "V-groove" side resting on said surface.

  • Thread the tap through the guide and into the predrilled hole.

  • Turn the tap clockwise; this will align it perpendicularly using the guide as its base.

  • This ensures a straight, accurately tapped hole.

  • Every few turns of the tap, you should unscrew the tap counter-clockwise in order to clear the chips.

Tapping by hand is beneficial because resistance can be felt, and this prevents tap breakage.