See if this Pushblock Tip Floats
Over the years, I've found that most of the pushblocks that come with jointers and shapers provide little grip on the stock. Instead, I use a couple of molded sponge-rubber floats, such as Stanley Goldblatt part no. 8438903295 (call 800-262-2161), that seem to hold on to the wood better than ordinary pushblocks. The broad aluminum bases on these masonry tools won't damage a cutter if hit, and they keep my hands well away from the cutters of a jointer or shaper.
—Brian Grams, Gillette, Wyo.