this is the translation from page 5
Now comes the difficult part ... the visor and the mask
,
The mask must be heated at the bottom of the chin area, otherwise the jaws do not match the dome at the bottom ... because the mask is deeply drawn, the mask is too wide at the bottom of the jaws.
Do not worry ... slowly and carefully warm up with the hot air dryer and put down on the cheeks together
to press. After the desired result with cold water 'quench' ... thus the plastic can not
More in its previous form and remains in the position in which we want to have it.
page 6
Then you have to adjust the visor to the mask.
Fix the visor parts to the mask with clips and allow them to overlap at the top, and after approx
Mark the accuracy of the fit with a pen.
On the sides the line on the mask must be drawn so that it forms a line with the visor
As soon as the desired result is obtained, the sight pieces are trimmed and, after approaching the optimum pass accuracy, glued with one (here I used gaffer tape) the adhesive tape roughly to fit the visor with the mask to the cathedral