163v - - - - - Crayfish
The hairy little horns that it the crayfish has under its snout tend to come out lumpy and unclear because, after they are burnt, it is difficult to remove and clean away their ash, which, staying in the mold, prevents the metal from running well. And for this reason, one makes a small gate of wax thread at the tips of them, in order both to hold them up and to blow away the cumbersome ashes from inside.
at left top margin
Do not spare any pins, placing them not only in the middle of the body, but also on the big legs, and two or three on the tail, according to the positioning that you want to give it.
Crocum
That which has become rusty by itself, having been doused with water, salt, and either vinegar or urine, and then well—dried and reddened by heating, is deep red when crushed on porphyry and is of the color of bol de levant, almost like minium. But that which is doused with urine and dried acquires a deeper color and almost like crushed aes ustum or like vermillion. But the first one, finely crushed, acquires a bright red color like cinnabar when placed in spirits. And the one and the other, when prepared as said above, finely ground and made very hot, produce a red smoke like an acid vapor if, being thus hot and fine, one throws vinegar, urine or spirits on top. The urine makes a lot of color and the spirits as well.
Figure
Repairing
It is much better to only lightly repair your work with a burin called an onglet or the one called chaple or with a small file. Above all, avoid touching your work, but touch only the burr or lumpy parts that will have occurred during the casting. While reworking, moisten and rub your work with a small bristle brush.