Will this work for playing bottleneck? Holding the guitar in a traditional way

I put one of these nuts on an acoustic guitar to play in my lap, and another on a Telecaster MIA which i play holding vertical in a traditional way. I use a standard glass or metal slide over my finger, so i guess a bottleneck would work, too. However, this nut raises the strings high above the fretboard so it will not allow you to fret the strings with your fingers -- just to play with a slide -- because the clearance is too high. If you want to press the strings against the frets with your fingers, you will have to find a solution that leaves your strings closer to the frets than this product. I hope this helps.

Has anyone tried this on a Telecaster type guitar?

I have put this Grover Perfect nut on a Squier Telecaster, on a MIM Telecaster, and on an Anniversary MIA Telecaster. The nut was too wide for my Squier and my MIM teles, and stuck over the edges of the fretboard, but they played fine. The Grover Perfect nut fit my Anniversary MIA Telecaster almost perfectly because it's fretboard is narrower at the nut. I have played these guitars lap style, standing with the guitar held horizontally at my waist with a strap, and vertically, which is more of a balancing act. But whatever I did, I always liked the sound. I hope you get what you need!

Will this work with my acoustic that has 1-3/4 spacing at the nut? Also, does it work on electric? Thanks

Hello ExHead, I don't know about an electric, but the Grover was a perfect fit for my resonator which has a 1-3/4 nut as does my Acoustic, as a matter of fact I'm thinking of ordering another one for my Acoustic. The Grover itself is 1-7/8 and does space the strings very slightly wider apart which in my case is a real good thing. I hope this helps you.

Will this fit over the nut on a lap guitar? The third string on my lap guitar is about 1 mm lower than the other strings making it hard to play.

It should, although for a couple dollars more you could just replace the nut itself. The Grover should work but your strings are going to be uber high, not really a problem for a lap steel, but just saying. My big issue with the Grover is the string spacing, approx 1-11/16" overall with 5/16" between strings, I have 2 that I couldn't use on slide guitars as it placed the strings off the fretboard, again as said probably not an issue with lap steels.