Epoxy and Sawdust for Filling Checks
Advice on blending epoxy to fix cracks. January 19, 2011
Question
Does anyone know of a fill (epoxy, etc.) that can be used to fill checks? Black would be fine.
Forum Responses
(Cabinetmaking Forum)
From contributor D:
You probably already know this trick, but just in case, for a minor job just go to the HD and get some five min epoxy, sand the heck out of your walnut and make a ton of fine sawdust. Mask off the areas around the checks with tape. Mix the dust and epoxy, thick enough to have lots of color but not so thin that it’s plastic like when dry. Then fill the checks with the mix using a thin putty type knife or thin flat off-cut (I like the flexibility). Don't use too much, once dry it's a pain to knock down.
I actually use a plane or scraper to get the bulk off then go to sanding. I have done this trick a few times and applied finish over with excellent results. The finish will absorb if you get the mix right. For bigger jobs you can try marine epoxy, but you'll need to make a lot of sawdust.
From the original questioner:
I'm thinking of adding a color to the epoxy, like black, etc.
From contributor N:
You can add a drop of universal tint (Tints All) to five minute epoxy without a problem. Burnt umber or lamp black or a mix should do it. Just don't add too much and do a test batch before you fill the checks.
From contributor D:
I've never tried the tinting, but I've gotten good results from just sawdust, the finer the better. I don't know if one can really make checks/mistakes invisible this way, but when I've had to do it I never had a customer notice.
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