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#9
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Allthread for my bench top?
If you're going to use "store bought" dogs, hopefully you have one to act as a pattern for the dogholes. Can't stand the idea of steel or brass dogs! If you're going to make your own dogs then you can make them to fit the dogholes. Yeah they will be wood, too classic to me, I couldn't help it. Lignum Vitae with white oak springs. Either way, making a template and routing the dogholes on the inside of the bench frame is a lot easier, assuming the apron stock is thick enough. The tail vise will be a double ended John Nyquist, 8/4 maple splined to the front, 47" or 48" long. The right end acts as a left jaw. It's dog holes will be 1" square, each edge 4" apart, the bench is for small work. The top will be around 2" thick, Two inch solide or two 1" layers glued together? The latter will let you route dadoes in the bottom of the top layer and in the top in the bottom layer - for All Thread. Lots easier than trying to drill LONG holes through the bench top. Not like boards are laminated one on top of the other, but rather standing up faces glued side to side. For reasons of others in this small thread I have decided no allthread. The bench is too small, and not a radical level of humidity changes occur here. I am using a Shark fine cut Ryoba, a few chisels and a Stanley 71. I do it this way to create a little tradition for myself in learning hand tools. and am thinking of using four 3/4" allthreads from front to back. For the All Thread, if you go with a shoulder vise you really need 1/2" minimum All Thread through the "arm", it's spacer and the front apron to tie them together. As above. But it is a tail vise, not a shoulder vise. It's actually "L-ed" into an end vise with one large dovetail using two LV bench screws (cheaper than...). The top is going to expand and contract - no matter what you do. How you join the apron parts together is critical. Dovetails,without an glue, will allow for movement on one axis, but not on the others. This will allow for expansion and contraction where it's needed but limit movement where it needs limiting. The front apron is all hard maple, so the spline will be the same wood. For that I will use the dado set on the table saw. If I have a #45 I would use that instead. I really cannot figure out what you mean by dovetails without glue...? If you're using splines to to aline the core to the apron - don't use any glue. That's where the All Thread through the apron and bench top will hold them together. In California? Not much humidity here. It only effects "white pine" door jambs. Really think through the apron joinery and how the assembly will go - because the splines complicate things a bit. http://home.comcast.net/~charliebcz/...CBbench28.html Rather than All Thread and holes of somesort throught the bench top, barrel nuts and the bolts that go with them can be used to hold the apron front and back to the bench core. Had to use one on the end of my bench that has the shoulder vise because I couldn't think of any other way to do it (bottom of this page - with a tip on doing barrel nuts) http://home.comcast.net/~charliebcz/CBbench22.html I know I have yakked about it with this bench before, but "should I" use them at all? Yes, unless it requires drilling 24" long holes. In that case consider barrel bolts to hold the apron to the bench core. Can't find them big enough. I like the idea though, and I can picture it. You do mean steel cross dowels, right? Machine screws would go to them in the main core of the top? That's a bit hard to work though. For "me" that is. There are plenty of these homemade benches that don't have them as I've seen online and in the books, if I did I would have to drill 43 holes, or maybe half that if I drill after sectional glue-ups... Dimensions: 57" + 3/4" spline + 2" vise jaw apron " 2" outer jaw =61" + screw handle ends 26" deep, 2" thick top, all hard maple. snip Really consider dovetails for the apron. They're strong and yet accomodate movement. Okay I will, where can I gat a good look at such an assembly? Alex - "newbie_neander" woodworker cravdraa_at-yahoo_dot-com not my site: http://www.e-sword.net/ charlie b another newbie a few steps ahead of you - my bench is done already. |
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