Lap Steel Fretboard Template

After building a lot of CBG,s Stomp boxes, and Wooden bullet mic,s whit success I want to start a new project by building my self a lap steel guitar. I have a couple of idea,s. All so seen a lot of YT clips But i am looking for a building plan with info of the size and so on. I have looked on the net but did not really found a spectacular model ore plan. I want to use laminated wood (i still got in the barn) and the left over stuff of years collected Guitar pieces ( just a pile of crap fore my wife and an capital for me ) I will cover the body with parquet wood for the looks. So will the fretboard.
Is there anybody out there who ones one or have some measures of the scale and so on.