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Step 10: Epoxy in Place

Picture of Epoxy in Place
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Once the mortise is sized, squeeze in equal parts of your favorite epoxy.  I mixed them right inside the bottom of the mortise.

Insert the portafilter shaft into the handle and watch for squeeze-out.  Wipe off any excess epoxy with a paper towel.  If any epoxy gets on the wood, it's no biggie - the epoxy can be sanded off once it dries.

Let the epoxy set for the recommended amount of time and then some - I noticed that the large thermal mass of the portafilter significantly increased drying times by keeping temperatures low, and therefore slowing down the chemical reaction which dries the epoxy.