<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Re: action bedding</title></head><body> <div>I use a dial indicator gauge for many measurement tasks in our workshop. While adjusting bedding screws back in 1987, an idea occurred to me which has since proven to be perhaps the most accurate and fast method for this operation.</div> <div><br></div> <div>Included below is a description of this technique which I wrote in 1996;</div> <div align="center"><br></div> <div align="center"><b>Setting bedding screws with a dial gauge.</b></div> <div><br></div> <div>In 1987 I developed a method for setting the bedding screws (glide bolts) with a micrometer dial gauge. This method is extremely accurate, and much faster than the traditional 'tapping' method. With the action and keys fitted to the key frame in the piano, the glide bolts are wound up so that they clear the key bed. The dial gauge (mounted in a suitable piece of wood, see diag.) is placed on the keys at the balance rail, adjacent to the first glide bolt.</div> <div><br></div> <div>           <img src="cid:a05010400b6adf75ebaf4@[210.23.147.68].1.0"></div> <div><br></div> <div>The dial gauge plunger will be compressed by the pin block (the reading is unimportant). The glide bolt is adjusted down until the dial gauge reading just starts to move, and until the precise point of contact of the glide bolt with the key bed is determined. This procedure is repeated for the other glide bolts. The adjustment of all bedding screws will take no longer than 5 minutes.<x-tab>      </x-tab></div> <div><br></div> <div><br></div> <div>Regards to all,</div> <div><br></div> <div>Ron O</div> <div>-- <br> <br> _________________________<br> <br> Website:  http://www.overspianos.com.au<br> Email:      mailto:ron@overspianos.com.au<br> _________________________</div> </body> </html>