IForgeIron Blueprints
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BP0229 How to Level a Drill Press to the Spindle
Original Notes from Saltfork Craftsmen ABA member Adam Hall
Text and Photos: Jim Carothers
The problem at hand – how to accurately align the drill press table with respect to the spindle? This drill press had recently been used to angle drill some holes by loosening the bolts under the table and rotating (tilting) the table – something like tilting the blade on a table saw. It was now time to put the table back in alignment with the spindle. Since nothing in my shop is really true or exactly level, the use of a simple carpenters level would not produce an accurate alignment.
Note also that the drill press table shown can only be aligned in one plane; the other plane is set by how the table and clamp were factory machined to match the drill press column. So alignment in one plane only simplifies things some.
The alignment tool is made from 1/4" round bar or other very stiff wire. One end of the tool is ground to a point.
Chuck on the tool and raise the drill press spindle all the way up. Make sure the spindle stays in the full up position; use the spindle travel lock if necessary.
Make your best guess as to setting the table level (in align) with the spindle and lightly tighten the bolts that lock the table tilt angle. Now, crank the table slowly up the column so that the pointer on the tool is just clear of the table face – maybe 1/8” gap to start with.
Turn (rotate by hand) the spindle and alignment tool 180^. Check the pointer on the other side of the table face to see if it is hitting, closer to the table, or further away from the table than your initial gap.
Adjust the tilt of the table as necessary, lightly tighten the bolts again, and repeat Steps 3 & 4 until the pointer barely touches the table face at both positions. Fully tighten the table bolts.
Alternately you could use a set of mechanics feeler gages or a business card as a gage to check the pointer to table gap at both sides. The use of simple gages would take care of any spring (deflection) in the pointer.
If you really want to get fancy with the alignment, use a dial indicator as you would to set a milling machine head to the mill table.
Adam Hall and Jim Carothers
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