6.4 My fingertips/toes are missing, how is that possible?

Missing fingertips have a known cause and have nothing to do with lumps in the alginate.

What happens here is that air that is in the fingertip while you are pouring plaster into the mold cannot escape and therefore accumulates in the fingertip. So no plaster can get here and the result is a missing fingertip.

We have also indicated this in point 5 of the manual.

The solution:1

1) Rotate the mold to allow air to escape (see point 7 in the manual).

2) Avoid these types of dead spots (see point 5 in the manual)

3) Try to pierce these points with a skewer or something similar, so that the air can still escape.

We also mention this problem a few times online because we want everyone to get a good result.

NOTE: There are hand positions that cannot be used properly. This is because when casting plaster, air is trapped in the alginate. This will result in missing fingertips.

Make sure that the air can always escape (diagonally) upwards. If a finger is bent, this is not possible. In that case, the fingertip must touch the palm, so that the air can still escape via the palm. In the good examples of the fist and the shooting position, the fingertips that are bent touch the palm so that the air can escape via the palm.

The bent fingers in the wrong examples do not touch the palm. The red spots indicate where air is trapped and cannot escape. These often become missing fingertips.

Working on these kinds of mistakes is very difficult and can only be done well if the casting was in acrylic resin. Acrylic resin bonds to itself and can be thickened so that you can carefully make something on top, but that requires a lot of practice.