Centering or adjusting a drill press for drilling angled holes
I am looking for advise or a technique to center up a drill press for drilling angled holes. Specifically I needed to drill four angled holes in a row along the length of two brackets that would recieve dowells and subsequent shelves.
The issue or concern I had was how to make sure the piece was in line with the bit so that the angle of the hole would be centered and not off to one side or the other in reference to the sides of the bracket, thus keeping the brackets parallel when recieving shelves.
Other than just eyeballing it does anyone have a technique that they use for setting up a drill press for this application.
If my explanation is not clear enough please let me know and I will try to explain it better.
Thanks
Replies
The first thing to think about is if there is another way to join your work pieces. Sometimes it's easier and more efficient to question the way you are thinking and look for other solutions.
Lucky for me, I have a radial drill press and can turn the quill to bore on an angle. To keep stock centered you need a fence attached to the table, tall enough to be able to clamp your board to. Next you need a bit that won't tend to wander as it enters the wood. Forstener bits are a good choice but a spade bit with a long point might work if the angle isn't too steep. The issue could be the way the board sits on the drill press table, probably only contacting an edge while it is held at the desired angle. You can turn most tables 90 degrees so it is vertical, then make sort of a T shaped fence with a leg to clamp to the table.
You could also do the drilling with a hand drill, making a guide. Drill your desired size hole in a thick block of hardwood, then cut the block on the angle, attach a fence so you can position and clamp the block to your work piece. A brad point bit would be a better choice for this since the shaft is even thickness along the length and will stay centered in the guide hole. You just have to start slow so the bit won't wander as it first makes contact and bites in.
DP fence + jig?
I'm not clear on the shape of the bracket, nor where the angle comes into play. But, like Hammer, I'd start with a fence on the DP table and a jig that would hold the brackets at the desired angle.
An auxiliary table on the DP often comes in handy:
View Image
This forum post is now archived. Commenting has been disabled