Hi guys
Not quite sure where to ask this question but here goes.
I want to join three pieces of plywood together but not at 90 degrees, rather at say 120 degrees. The top pieces is 1000mm x 1200mm, whilst the sides are 1000m x 150mm and 1200 x 150mm.
In other words a top that has two fascia boards attached to two of the sides. The top is sloping at 30 degrees from the horizontal and then I want to attach the two sides at the vertical and they must all meet at the one corner. So the two fascia boards will also meet at 90 degrees at the corner but the top will meet the shorter of the two at 120 degrees and then attach to the other fascia boards at 90 degrees. Not sure if I’m explaining myself properly.
In any case, can I do this with my router or must I cut them by hand or must I invest in a fancy jig system like the gifken or woodrat or whatever? Also tell me if this is in the incorrect forum section.
This will be my first go at ANY joint and my first go with the router.
I’m from Johannesburg South Africa (btw)
Thanks
Hilton
Replies
Hilton,
You have chosen yourself quite a challenge for your first joinery project.
Dovetailing is not the best way to join plywood, at any angle. A simple(!) miter, reinforced with splines, or glueblocks applied inside, will be stronger, and easier, in plywood. Easiest to cut with a table saw rather than router. Buy enough stock for several test cuts.
Someone here on the list posted a link to a couple sites a while ago, that gave tables to set your saw for compound angled miters. Perhaps you can do a search for it, or maybe they'll be kind enough to repost for you.
Good luck,
Ray Pine
Hilton,
Here is a table for cutting compond angels: http://www.woodcentral.com/bparticles/miterangle.shtml
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