Assembly of your new snap press is very simple.
Remove the bolt from the handle, position the handle as in the picture below, and reinsert the bolt to hold it in place.

You need to try a few snaps and adjust the calibration screw up and down to allow more, or restrict the amount the handle can be compressed down. Snaps require a precise amount of pressure to attach them properly. Too much pressure the snap will prematurely fail and fall off, not enough pressure the snap parts will not snap together and will prematurely fall off. Setting the calibration screw right will allow you to press the handle down as far as you can, each and every time, and know that the snap has been adequately applied and not have to put in any guess work with the amount of pressure to apply with each and every snap.

Your die set has 3 pieces - a socket die, a stud die, and a cap die. Just to confuse the odd person, some times 4 pieces are delivered in the die set, the extra is another cap die set and there is no difference between the two cap dies delivered if you find this to be the case.

1- First insert the cap die, this is the solid metal piece with a shallow round indent in the top.
This goes in the hole in the base of the press, and will hold the caps (round with a sharp prong).

2- Next decide whether you are applying the socket side or stud side of your snap first, and select the appropriate die piece. The easiest way to tell the dies apart is to try and see if your snap piece fits snuggly on it (a socket in this picture).

3- Snap your snap socket or stud onto it's die, and screw the die in.

4- Take the cap piece and stick the prong into the fabric where you want the snap to be placed. It doesn't need to go right through the fabric, you just need to be able to hold it in place.

5- Push the handle down firmly, which brings the top (socket or stud) piece down onto the fabric. You need to push down hard enough that the centre prong of the cap piece is being crushed into the socket or stud snap piece.

6- Release the handle and remove your fabric from the press, with it's now attached 1/2 snap. Choose the other snap piece (socket or stud) and snap it onto it's die piece. Screw this die piece in, and repeat steps 4 & 5.

Yay, you now have a completed snap! The two sides should snap together neatly and hold firm. If they don't, you can put it back in the press and try re-pressing the snap, to make sure that you have fully crushed that cap prong into the socket/stud piece.

A handy hint is to save all your microfleece off cuts and put in as a support/packer in situations where you are wanting to snap through one layer of PUL only, as doing so without the microfleece will create a distorted looking garments around where the snap has been applied. Most MCN's have parts where this is the case