It will be a good helper in all cases where any surface is necessary to impart roughness. For example, to glue ceramic tiles on painted with oil paint the wall. You take a plate, fill her sparse number of nails so that their edge came from the other side, and you do not need to spend a lot of time and effort to cover the wall of the grooves providing the best coupling with the applied cement mortar.
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THE WORM GEAR ON A LATHE
We offer to your attention a simple device with which a lathe can cut the worm wheel with any number of teeth. As the cutting tool used here is the standard tap mounted in the Chuck of...
AND THE SOFA AND THE BED
As a regular reader of the journal "modelist-Konstruktor", I would like to thank the editors for publishing materials of interest. Particularly attracted to me and my family section...
