|Project by kiefer||posted 02-21-2015 03:22 PM||2945 views||10 times favorited||21 comments|
The other night at wood workers meeting we had a conversation on aligning a drill press table to make sure the table is perpendicular to the bit and all kinds of methods came about .
I have been using a square and 1/2” rod but the results could be better and looking around the shop I thought of using a bolt and a strip of hardwood with a screw in one end and attached to the bolt on the other or a Z shaped rod as somebody had suggested .
Then the light came on why not use a dial indicator and the adjustable arms of the magnetic base of it .
FIRST OFF UNPLUG THE DRILL PRESS FROM POWER .
Here is the set up ,chuck one end of the arm assembly into the chuck and set the arms with the dial indicator attached and the needle reference set to the needle in the first measuring position of the table then lift the dial indicator needle off the table and rotate the chuck by hand about a quarter turn and let the needle touch in the new position on the table ,repeat this by turning the chuck a quarter at a time by hand and observe the measurements .
Adjust the table to get as close to zero difference in measurements as possible .
When doing the adjustments realize that the measurements taken 180 DEG opposite have to be halved because when the one side is elevated the opposite side drops by an equal amount.
This is the best way I have found to do this as I get a measurement read out .
When done remove the arm and dial indicator before plugging in the drill press .
As a foot note it is a good idea to brace the table from the underside when using large bits or hole saws or a mortising attachment as it exerts a large amount of pressure on the table and can lead to binding of the bits .