Different tasks sometimes require different work heights. One solution is to use a lift table like this one from Southworth to turn your workbench into a variable-height workstation. You can use it on top of the bench or build into the top so it’s flush with the surface, depending on your needs.
Operated by a cordless drill with a 1/4″ hex drive from either side of the lift, you can position the lift-tool anywhere between 3-1/2″ to 17-3/4″ above the work surface. The drill operates a precision screw jack that drives the scissors mechanism to raise and lower the platform. The lift is self-locking so it remains where you stop.
Southworth makes the lift from high-strength aluminum so it weighs only 32 lbs. but can raise and lower up to 300 lbs. The work surface is slotted to help secure loads. A non-marring ABS overlay which fits over either the top or the bottom is included with the lift. The Southworth’s lift-tool lists for $475 and you can get it for about $480 shipped from Amazon.