<html><div style='background-color:'><DIV><I thought 1/8th" is what we were "supposed" to set let-off to on a <BR>vertical. Why sandwich two together? Am I missing something here? <BR><BR>Avery <BR>><BR></DIV> <DIV>Avery,</DIV> <DIV> </DIV> <DIV>I usually set letoff at 1/4" or a little less. And  quite a few tech will also set treble letoff even closer than 1/8th", so you have a gradual decrease in letoff from bass to treble. this is not written in stone, obviously, but i find, in most cases, this works well. "Let's tune up" by John Travis makes refernce to this variation in letoff between bass, mid and treble, and the Samick "technical specs and regulation procedures" manual specifically calls for three INDIVIDUAL measurements, both for grands and vertical, with the latter being: Treble= 2mm, Tenor= 2.5mm, Bass= 3mm. The famous publication, "Piano tuning & allied arts", by White, ALSO specifies only ONE way to set letoff, or as it's referred to in the book as"escapement". Quote: "....Hammers should trip at a distance of 1/4" (bass end), to 1/8" (treble end) from the strings." So, yes, you can always just set letoff for the entire piano to 1/8th". Your call. <BR>Terry, <BR><BR>>Anyway, I found a couple of wood paint stirring things and <BR>>discovered that they are just about exactly 1/8th" thick! The next <BR>>finding is that when you sandwich two together you have letoff for <BR>>the bass! <BR><BR><BR>>Terry Peterson <BR><BR><BR>_______________________________________________ <BR>pianotech list info: https://www.moypiano.com/resources/#archives <BR></DIV></div><br clear=all><hr> <a href="http://g.msn.com/8HMTENUS/2749??PS=">Use custom emotions -- try MSN Messenger 6.0!</a> </html>