To Flat and Smoothen the Face of the Punch, he uses the _Flat-Gage_, (described §. 12. ¶. 3. and _Plate_ 10. at A.) thus, He fits one convex corner of the Shank of the Punch, into the Concave corner of the _Flat-Gage_, and so applies his _Flat-Gage-Punch_ and all to the Face of the _Using-File_, and lets the _Counter-Puncht_ end, _viz._ the Face of the Punch Sink down to the Face of the _Using-File_: And then keeping the convex Corner of the Shank of the Punch close and steddy against the Concave corner of the _Flat-Gage_, and pressing with one of his Fingers upon the then upper end of the Punch, _viz._ the Hammer-end, he also at the same time, presses the lower end of the Punch, _viz._ The Face against the _Using-File_, and thrusts the _Flat-Gage_ and _Punch_ in it so oft forwards, till the extuberant Steel on the Face, be Rub’d or Fil’d away: which he knows partly by the alteration of colour and Fine Furrows made by the _Using-File_ on the Face of the Punch, and partly by the falling away of the parts of the Face that are not yet toucht by the _Using-File_: So that it may be said to be truly Flat: which he knows, when the whole Face of the Punch touches upon the Flat of the _Using-File_, or at least, so much of the Face as is required in the Letter: For all Counter-Puncht-Letters, as aforesaid, must have a greater Face of Steel than what the bare Letter requires: for the reason aforesaid. Another way I use is thus. After I have Fil’d the Face as true as I can by guess, with a _Rough-Cut-File_, I put the Punch into an Hand-Vice, whose Chaps are exactly Flat, and straight on the upper Face, and sink the Shank of the Punch so low down in the Chaps of the Hand-Vice, that the low side of the Face of the Punch may lye in the same Plain with the Chaps; which I try with the Liner. For the Liner will then shew if any of the Sides stand higher than the Plain of the Chaps: Then I Screw the Punch hard up, and File off the rising side of the Punch, which brings the Face to an exact Level: For the Face of the Chaps being Hard Steel, a File cannot touch them, but only take off the aforesaid Rising parts of the Face of the Punch, till the _Smooth-File_ has wrought it all over exactly into the same Plain with the Face of the Chaps of the _Hand-Vice_. Some _Letter-Cutters_ work them Flat by Hand, which is not only difficult, but tedious, and at the best, but done by guess. The inconvenience that this Tool is subject to, is, That with much using its Face will work out of Flat. Therefore it becomes the Workman to examine it often, and when he finds it faulty to mend it.