We have assembled with the Undercover Jig Set a shelf. With average skill and a little forethought can thus achieve good results. However, one should not forget the length of the drill + drill. Since we built a shelf with only 20 cm wide shelves, we were able to the holes in the shelves not drill directly on the spot, but had to pre-drill them. This requires a "dummy" timber against which you mounted the shelf at right angles in order to then begin properly with the template can. The so pierced board can be easily bolted to the non-pre-drilled side bolsters. If the side cheek need a small hole so that the screw can be rotated into it, you can then do this with a normal drill through the pre-mounted shelf as a template through.
We have created holes are not sealed with the supplied plug, because the holes are hardly visible and do not disturb. Here, however, is still a question: Where can I get more of those wooden plugs? Since they have no supporting function, you can see the holes as well if you want to fill with the incurred sawdust mixed with glue or with finished Fensterkit in the right color.
As a very practical way, has become the "Wolfcraft 3415000 chip mobile" proven combination for Jig Set, thus many work alone manageable, for otherwise you would need a "third hand" and 2nd man.