Marzio Giglio - Wooden Planing Form to make quad rods
 Marzio Giglio is an experimental physicist by profession. His wit and entertaining teaching made his presentation a remarkable memory of the Sansepolcro's gathering. Marzio stressed the importance of tolerance (or precision) while working. The idea of achieving the "one mil myth" in working detail is perhaps an exaggeration considering all the variables which can affect the hand work of a general rod maker. However, next to learning how to use a (good) plane with a properly sharpened blade, the most important tool is a reference bar. Marzio showed three reference bars to measure the precision of the PF: 2 bars of 1 mil of an inch and 1 bar of 3 microns (3 mils of a millimeter). This tool allows for the correct checking of the working precision. A wood planing form can be made of hard wood (i.e oak or maple wood).
He suggested also using Japanese, relative unexpensive planes like the Kakuri and
planing the wood with very fine, 1 mil of a inch fine wood shavings (a caliper
can be used to check the blade's thickness). 
TIPs!He suggested to use a 5 cent. of an inch scotch tape under the plane while working so that the blade does not reach the planing form in wood.Marzio also suggested to use clips to hold the bamboo strips and so to use the plane with two hands. Steps for making the wooden planing form were also given. Note that you need 2 identical but specular (mirror) planing form to make
a quad bamboo rod!  
from Marzio Giglio's presentation to the Sansepolcro Gathering main page
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