electric drill, which

[blunc]

this item is relatively inexpensive and would allow the use of previously posted drill bit chucks.

https://www.harborfreight.com/48v-cordless-14-in-screwdriver-kit-59758.html

 

[fiatboy]

I am afraid of the reliability issues with the small elect. screwdrivers.  Also, if the speed/RPMs might be too great.  Instead, I have been using one of those "push drills', which works good enough.  

[Skip]

I'm using a Black and Decker cordless screwdriver that's old enough that I'm not seeing pictures of it on the 'net. From what I see on the B & D website, most of their cordless screwdrivers turn around 180 RPM. That's slow enough that you will never burn styrene, I've never melted anything with it.

I use the same type of Hex Bit Chuck that everyone else is using, with a bigger and smaller jaw set up. Works fine for everything that I do. If I need slower speed, I use my pin vises and a shop made drill block which helps hold the drill rod at 90 degrees.