Adaptors are fitted to the files as shown in Photograph 33 enabling them to be easily
fitted and whilst there are just two types, one having a slot to accept flat files
and the other with just a hole for round square and triangular files, the size of
the slot or hole will have to be chosen to suit the file being fitted. Also, some
shaping of the end of the file where it enters the adaptor is suggested, see SK.
Each file will need to be positioned in the adaptor with some care so as to ensure
that, with the limited adjustment available on the machine, it can be set to be parallel
with the file's movement. Photograph 34 shows how the round file is being held in
position on the lathe whilst the two-part resin adhesive being used sets. Other shapes
will have to be held on the end of the tang, which maybe marginally less accurate
but should still be sufficient.
When applying the adhesive do not just place it in the hole and then press in the
file as air pockets are likely to be trapped in the individual teeth reducing the
strength of the final bond. Do therefore smear a very light coating of adhesive over
the file's teeth prior to placing it. Using the supporting method illustrated in
the Photograph will of course only allow one file to be fixed at a time.
With the file fixed in the adaptor then the tang can be removed using an angle grinder
fitted with a thin disk or failing that the workshop off hand grinder and the end
of the file generally tidied up.
Assembling the Filing Machine starts on the next page.