small steps

The tile production is going smoothly,so it is time to start thinking about the next step: fixing the bolts in the holes at the back of the tiles.
I know that it sounds simple: you glue them in, right? 
There are a few things that need to be considered. Without some sort of support the bolts will not stand straight (as you can see on the left):

Previously I had 3 bolts per tile and a simple template with 3 holes was enough to keep them where I wanted them to be. With 2 bolts per tile the situation changes as they can still topple forward:

After a few ( a good FEW) trials and errors I have settled on this template:

That will keep them in place! 
Well, that took the whole morning. I'm using recycled aluminium printing plates for making templates.Now I need to cut about 25 of them, and precisely drill the 4 holes in each one.  That will take care of the afternoon.