This setup is based on an old Portalign drill accessory and a 3/4” plywood router
mounting plate. The Portalign is a useful little gadget, but adding the router plate gave
it added stability. I didn’t have a drill press when I put this together, so this rig allowed
me to sand curves in wood with better control than hand sanding. I routed a 1/2” deep
recess in the under side of the plate to receive the Portalign base and used the two
mounting holes in the base to secure it to the plate with flat head machine screws and
nuts. Using the Portalign’s depth stop as a height adjuster, you can set the height of
the sanding drum relative to the BT3K table. Note the four steel washers epoxied to
the underside of the mounting plate to provide crush protection when the plate is bolted
to the BT3K table. I believe the Portalign is no longer marketed, but Wolfcraft makes a
modified version of a drill guide.
mounting plate. The Portalign is a useful little gadget, but adding the router plate gave
it added stability. I didn’t have a drill press when I put this together, so this rig allowed
me to sand curves in wood with better control than hand sanding. I routed a 1/2” deep
recess in the under side of the plate to receive the Portalign base and used the two
mounting holes in the base to secure it to the plate with flat head machine screws and
nuts. Using the Portalign’s depth stop as a height adjuster, you can set the height of
the sanding drum relative to the BT3K table. Note the four steel washers epoxied to
the underside of the mounting plate to provide crush protection when the plate is bolted
to the BT3K table. I believe the Portalign is no longer marketed, but Wolfcraft makes a
modified version of a drill guide.