|Forum topic by garbonsai||posted 03-24-2014 05:29 PM||1196 views||0 times favorited||9 replies|
03-24-2014 05:29 PM
The title sounds a little weird. Let me try and explain with the aid of the SketchUp pictures below. Right. So, I have a project in mind where I’d like to take a bunch of small oak blocks (roughly 3/4” thick by 2” wide by between 3/4” and 2” long) and join them together similar to how you would an end grain cutting board. What I want to end up with is one side (the back) that’s flat, and one side (the front) that’s basically like a topographic map of a city:
What I modeled in the images is roughly 6” x 12”, but for this project, I’m going to scale that up. I’m not opposed to incorporating some sort of backing for structural and/or joining purposes—the back won’t be seen. I know I have to take side-to-side wood movement into account. What I can’t wrap my brain around is how to join the blocks together.
I thought about using a plywood backer with a dovetail “keyway” routed into it, and matching dovetail “key” cut onto the back of the block. That would allow for movement in parallel with each keyway, but not perpendicular to it.
I thought about using screws through a plywood backer into the back of each block, but that seems like a really poor solution that won’t account for movement in any direction. Plus, it sounds heavy (although I can account for this).
I thought about applying glue very carefully to the shorter of the two faces where two blocks meet, but I’m not sure I’d be able to prevent squeeze out, and sanding/scraping would be impossible once I joined more than two blocks together.
I’ve thought about several other (probably) hair-brained methods, but none of them seemed workable for one reason or another. So, my question is, how would you go about doing this? There probably isn’t a single answer (if there’s one to be had), so feel free to share what you think (or know) will or won’t work. I’m open to suggestions.
-- Do not taunt Happy Fun Ball.