[Maker’s Note for Tools] KREG K5 Pocket Hole Jig

by Yun-Han Lin

KREG K5 Pocket Hole Jig is not a brand often seen in Taiwan, which makes it worth some attention.

The following is an introduction starting from the brand’s background information to  the tool itself with some details!


Started in 1986 by Craig Sommerfeld, the owner of the first-generation Pocket hole jig, Kreg Tool Company is dedicated to making tools or accessories that facilitate beginners in woodworking and processing more easily, with simplified guidance in tool operation. The most famous product- Pocket hole jig, has come to its fifth generation today, while other tools are favored by DIY woodwork enthusiasts.

Pocket Hole

The structure of a pocket hole is a hole drilled with a 15-degree tilt angle on the side (not the end face) of a wood piece before the structure is locked airtight using self-tapping screws. The pocket hole structure is commonly used because it is user-friendly. Just drill a hole in one of the woods you are going to combine together and put in the screw. There can hardly be any mistake and it is as strong as several other methods to combine the wood pieces. It can be used in quite several occasions.

Credit: https://en.wikipedia.org/wiki/Pocket-hole_joinery

K5 Master System

Credit: https://www.amazon.com/Kreg-Tool-K5-Master-System/dp/B00YT79BS2

For more information on the tools and functions of K5 Master System, please watch our video for opening the toolbox. The following are a few parts that we think worth sharing:

  1. Fixed ratchet structure: Compared with previous versions, the biggest difference this time is the ratchet design and the structure that helps clamp the wood pieces. It is handy but a bit troublesome to readjust the specs every time for different wood pieces.
  2. Design drawing (for Master System only): You will find the redeem code for 6 furniture design drawings in addition to the manual.
  3. Complimentary materials as samples: Screws in all lengths for users to try.
  4. Vacuum adapter: The space for installing the adapter is quite small and the adapter gets stuck easily, which requires a special design for improvement

Other Information & Feedback

Screw Type

Kreg Tool Company launches 3 kinds of screws of different materials: galvanized, blue-kote, and stainless steel. There are also screws with coarse threads and fine ones, based on the hardness of the wood pieces to be worked on.

For more information, please visit the official website of Kreg Tool Company: https://www.kregtool.com/tool-specs/kreg-screws.aspx.

We found that Cabinhouse8 sells screws manufactured by other subsidiary brands, and they included 1-inch screws that come in truss head, also called “Maxi-Loc” at Kreg. Kreg, however, does not produce this type of screw.

More information on the screws from Cabinhouse8:https://www.cabinhouse8.com/tw/product/show.aspx?num=7449&kw=%E6%96%9C%E5%8F%A3%E9%91%BD%E5%AD%94%E8%9E%BA%E7%B5%B2&listqty=18&page=1&fbclid=IwAR036qmAljNkQ4rUBMd4dpFexXGOoEdjnbPc28cUv6FHTEdIqFVDhN_yCtw

Direction of Applying Pocket Hole

There needs to be more tests on whether there is a specific direction to apply the pocket hole. I have seen projects where the pocket hole was drilled toward the opposite direction of the end face so that the structure was strong enough. (For more information on this approach: https://youtu.be/mvO6zaIUO18?t=408) However, there are no instructions on this part in the manual. We’ll share our test results on the strength difference in the future.

p.s. If there is no certain direction in which the pocket hole should be fixed, it will be easier to hide the drilled holes.

Feedback after use

The key lies in the self-tapping screws. With pocket hole and self-tapping screws, there will be a pressing force when the screw is fixed entirely into the object, leaving almost no gap between the screw and the surface.

There are some minor shortcomings though. For instance, the screwdriver that comes in the package is a bit too long; the pocket hole does not look nice when it is revealed too much. Yet, the whole system still speeds up the process a lot, so we should be using it quite often in the future!