I don't have a slot machine but had bought a multi tool a few months ago. With a current project needing hinge slots, I decided to see what the multi tool could do.

The simple procedure is narrated in the tips forum.

http://www.rcuniverse.com/forum/m_10257875/tm.htm

It was a piece of cake. It took five minutes on the bench grinder to reformat the cutting tool to suit the slotting procedure.

Thirty eight perfect hinge slots were cut in fifteen minutes and it was the first time to use the tool other than for detail sanding.

The slots were the perfect thickness for Dubro hinges.

btw, though I haven't glued the hinges in yet, with scissors a piece of 1/64 inch plywood was cut to the width and depth of the hinge plus a tang to fit into an Xacto handle. It seems the right thickness to carry epoxy on both sides into the slot. Yet to be seen is if it will be strong enough, if not I'll shape a glue spatula from a tin can or something. Very easy to do with old scissors.

edit note: The plywood spatula didn't work, it broke after about a dozen hinges. However, a spatula made of acetate from a windscreen scrap worked perfectly. It was shaped the size of the hinge with an added tang for insertion into the Xacto. I did drill some holes in it to assist taking glue into the slot. It worked great.