so trying to figure out how to set everything if I am screwing through a 2x4 into a 3/4" piece of wood. anyhelp thanks. I know I have to set collar at one thing, and the drill guide to another.
Are you working with the Kreg Jig K4? If so, you can access the K4 Quick-Start Guide here: http://www.kregtool.com/prodimages/kregjigquickstarguide.pdf.
You will need to choose a screw based on the material thickness. As you can see in the above chart, a 2x4 is 1-1/2" thick.
To join your 2x4 material that is 1-1/2" thick, you will need to use a 2-1/2" (64mm) screw. Then, you will need to set your Kreg Jig for the 1-1/2" marking. Feel free to save the chart above for future reference.
If you need further assistance, you may contact the Kreg Customer Service Team by phone at 800.447.8638 or by email at CustomerService@KregTool.com.
ok but I am screwing from a 1 1/2" into a 3/4" board??
You could drill through your 1-1/2" board into your 3/4" board, or vice-versa. It all depends on what you're building and how you want the final project to look. Please contact the Kreg Customer Service Team by phone at 800.447.8638 or by email at CustomerService@KregTool.com. Once they have the specifics of your project, they will be able to best advise you on how to proceed.