Formula for Depths

[Robert Hodge]

is there a formula to use to know how deep to drill the pilot holes?

[KregRep]

Hi Robert,

To get the strongest joint possible, you need to set your jig to match the thickness of your workpiece. This can be done in three easy steps:

1. Depth Collar Adjustment: To get the right pocket-hole depth, you'll have to adjust the position of the stop collar on the drill bit. Place your bit inside the Depth Setting Gauge on your jig, with the step of the bit at the marking that matches your workpiece thickness (shown below). Slide the Depth Collar towards the jig base and lock it in place with the included Allen wrench.
2. Drill Guide Adjustment: To ensure the exit-point of your screw is near the center of the workpiece, and for the strongest joint possible, you'll need to adjust the position of your pocket hole by raising or lowering the Drill Guide's height to match your workpiece thickness. Loosen the Drill Guide Pin, lift the Drill Guide until the correct mark is showing just above the jig body, and then re-tighten the pin.
3. Clamp Pad Adjustment: For a firm hold on your workpiece, you may have to adjust the position of the clamp pad. To do this, release the lock-nut, rotate the clamp pad in or out, and test the hold by depressing the toggle. Repeat this process until you get a secure hold on the workpiece. Then, re-tighten the lock-nut.
These steps, and other tips and techniques for Kreg Joinery, are outlined in this manual: https://www.kregtool.com/webres/Files/k4-product-manual.pdf. If you misplaced your product manual, you can download a new one for free on our website: https://www.kregtool.com/customer-service/product-manuals.aspx.

And, if all else fails, please get in touch with the Kreg Customer Service Team by phone at 800-447-8638 or by email at [e-mail]. They will happy to answer any questions you may have regarding Kreg tools and building with pocket-hole joinery.

Thanks!
KregRep

[daddywoofdawg]

there is a you tube video about kreg screws that talks about choosing the right screw like two different thickness of wood etc. don't have the link but search kreg jig screws.