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3.1 Set up
Placing a Work Piece:
One must always place work pieces on the table securing them using T-slots and
locating it with two square corners. Ensure that the work piece will not interfere with
the current position of the router or end mills.
Test the degree to which a work piece is secured prior to starting any job. The use of
double stick tape, and as mentioned in the section on Hold-down, mounting work
pieces to larger work pieces might be desirable.
Z travel of the Precix Router:
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There is 12” of Z travel on the Precix Router.
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The shank, when at Z=0 is 10” above the surface of the table.
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The shank when at Z-M (which is 6”) is 4” from the surface of the table
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End mills have anywhere from 1.125 – 1.625” of shaft prior to the fluted region.
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As previously stated (section 2.2) there are various end mill lengths available in
the lab.
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The nominal cutting travel for the Precix router is .25”
This is total length one could cut, with an end mill, which is 2.25” in length. There
are two principles that must be digested in order to anticipate depth errors:
First, the Z travel for the router is 6”. The reason its nominal cutting travel is 5.5”
is in order to take into consideration the rapid plane and stock to leave (.25”
each). Calculating whether or not a file is permissible within a 6” window is done
by the following formula:
Depth of cut + rapid plane + stock to leave < or = to 6”
If one is cutting a surface where 5.5” is the maximum depth, the top 1.5” of the
“pocket” removed for that surface must be able to accommodate the width of the
shank and perhaps even the router. This is a result of the fact that, the shank is