I guess that is the special pipe they have in the back, with negative
wall thickness! g

How about cheap garden hose or similar tubing for large saws?
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Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently.


For that thought I then thought "why not rubber medical tubing" for
hand saws? ...I think making that slice would be something to think
about, to do it evenly.

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Alex
cravdraa_at-yahoo_dot-com
not my site: http://www.e-sword.net/