Heres a little tip that could increase the safety margin.
May be common knowledge, but haven't heard it before.
When using push sticks or blocks to push stock across a fence (router, shaper, perhaps a jointer) I've been applying self adhesive sandpaper to the edge thats making contact with my stock
this has prevented slipping or sliding. This is esspecialy true when cope cutting rails on the shaper. the narrower pieces want to get pulled into the cutter. I know idealy a hold down jig is the best/safest way, but in real world app's its slow for production purposes.
...I for one would like to see more "Tips and Techniques" and less of which is the best, most expensive, largest, or latest machine. I guess many of us have been using various home-grown friction pads (sandpaper, recycled mouse pads, silicone rubber dabs, carpet tape, etc.) for miter gauges, push blocks, and the like, and forget that someone might profit from such mundane ideas. Thanks :-).
Just yesterday, we used clamps after glue simply to take the bow out of the wood we were using, and it straightened everything out for us. Usually though, any time you lay up a project the clamps are...