At 8:41 pm +0200 25/5/07, Aras wrote: >S&S Hamburg drills twice. >Kaj. Do you mean to say they drill right through with a small drill and then right through again with the final drill? That would be rather unusual and I don't see the point of it. If so, what size of drill do they use for the first boring? I first make the marks with a sharp punch, then use a centre drill and finally drill (right through or not, depending on the piano) with a special (German) wrestplank drill which has a more acute point than the jobber's drill and a faster spiral. If drilling a pilot hole right through would make the result more precise, I'd do it, but I don't see that it would. However I would never consider using the wrestplank drill without first using the centre drill. -- ______________________________________________________________________ Delacour Pianos * 34 Station Road * Poole * Dorset * BH14 8UD Phone: 01202 731031 * Mobile: 07801 310 689 * Fax: 0870 705 3241 ______________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070525/533f4543/attachment.html -------------- next part -------------- A non-text attachment was scrubbed... Name: P61281B3B 3.png Type: image/png Size: 21157 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/20070525/533f4543/attachment.png
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