I'm a semi pro musician playing bass and guitar. I gig mostly on upright and electric bass in the DC area, jazz, rock soul stuff. I play a lot of jazz guitar and am reasonably proficient at it. I'm a historian for a living.
I also build instruments and have a large collection of spare parts--wood, bridges, pickups, tuners--from various projects over the years. So I decided to build a lap steel to make use of some of the stuff. i had never payed a lap steel and knew nothing about it.
I made a very crude one out of some scrap cherry and walnut

It used threaded bar stock for the bridge and nut. The strings attach to nails driven into the end and ground smooth. Used an old P90 for the pickup, and after some searching tuned it to C6.
Wow! This is fun! the western swing licks just come flying off the board! Wow. I feel like I'm in the Spade Cooley band!
I liked it so much I decided to build another, a little more refined, out of pine. Added a lexan fretboard backpainted dark blue, with white

This one has a Lace Alumitone humbucker size pickup, and the bridge and nut are made out of brass rail from our G scale Garden railway
I banged out a clip of me playing it:
http://chnm.gmu.edu/courses/omalley/rusty%20steel.mp3
Please keep in mind I had never played a lap steel ever till two weeks ago!
So I have some general questions.
Both of these have pretty wide string spacing, almost two inches. Is that normal? Sometimes I think i would be better off with something more narrow. Would it be easier or harder to manage slants? Is there a general norm?
Scale length--both of these are 25 inches, because I had a 25 inch fret scale already, and I thought higher string tension would be better. It seems to me that maybe that's longer than typical? Here again is there a general rule?Seems like there might be real advantages to a shorter scale length.
Bars: I bought a Stevens style bar at Guitar Center. It sounds good. Then I bought a Dunlop Jerry Byrd bullet bar from a local dealer. It's better in many ways--lighter, so a little faster, and I can do slants more easily. That little indentation on the end for the thumb is awesome! The tone is a little better with the Stevens bar I think, and also the Jerry Byrd bar is just a little short. So is there a relationship between weight and tone? I'm thinking "heavier equals better tone," and also "heavier equals harder to make quick moves." I've ordered one of the latchLake bullet bars. I keep thinking I want a bar that combines the two styles. Is there such a thing?
Anyway hello, thanks for letting me yack, all suggestions welcome and appreciated.