Table design  

How much
better in sketching should one be ? That's lovely (and reminds me of Doty's "Wordless Workshop" as seen regularly in some magazine, some fifty years ago) ! Don't you love it ? The screw drivers are so fine. . .
I had thought all pieces could be drilled from the same side of the curve -- but I guess you need at least one "through-hole" for the last pin to be installed ! (Maybe you mentioned that at the top ?) If so, inverting that piece in the jig won't allow it to go to the correct location, because the end angle will be reversed ? Do I have that right ?
Perhaps a more universal jig (allowing other end shapes as desired in the future ?) would eliminate the fixed end plate and have the side plates only (supported perhaps by individual buttresses) and an adjustable end plate that can be clamped or screwed between them. An end block can be devised that would accept any end shape (such as your 60-degree angle) in either orientation, without adjustment. In this case, it could be a square block with a 60-degree snipe cut in each edge, against the side plates, to capture just the tip of your end, right side up or upside down. (If this is unclear, I'll submit a sketch, but I think you see what I mean.)
The other thing to mention is that the side plates will want to be broad enough to be used to clamp the workpiece between them, so you can concentrate on the drilling itself. This is implicit in Koen's design. And you'll have to confine yourself to one part thickness -- unless you make one of the side plates and its buttress movable, which wouldn't be hard to do. It all depends on how universal you want this jig to be.
Needless to say, all of this builds on the essential work of Koen. If I or someone else had done the first sketch, it would be he who would have improved on it. This is how bridges get built !
What do you say, fellows ?

Jig
this is my weekend project, using Koens' basic design and the modifications from SDR. To make it universal I'm going to use SDR straight 90 degree end and have a drop in extruded 30/60/90 triangle (there's already a bunch in the trash from the legs). I'm also more confident building it with nice right angles. Did I mention I got a D in woodshop?
Koens' drawing is (forgive a little gushing) near DaVinci like in it's beauty, detail and clarity. So cool.

Isn't it ?
I would have expected such clarity and warmth from this man, but it is still a rush to see it on the page (or screen). Thanks to Patrick for obliging with the transcript, and for arranging the nifty blow-up feature.
Sounds like a good plan. Let us know how you make out.

James...
Give a little thought in advance about how to clamp this jig to your drill press. It might influence how you size, shape and cut the base.
Re: clamps--clamping is a personal preference. 🙂 I would spend a few bucks and by the kind of clamps that have squeeze handles, squeeze releases, and rubber boots on the clamp faces. Time is of the essense.
Re: Jig placement--think in advance about how to clamp the jig in the exact same spot on the drill press each time. Outline the jig location with a highlighter, when its in position, and drill a hole through the jig's base when its in the proper position. When you remove and replace the jig, for whatever reason,set it in the outline, the pull down the bit to fit the hole, clamp and drill.

James...
Watching you go through this process reminds me why something truly new costs so much at first, at least when made in low volume? Getting to elegance of design and prototype takes a lot of time, thought and money.
It gives one a new appreciation for something like the space shuttle. 🙂

koen
When do we get to see the drawings for your first shot at architecture?

Hi Don,
I am still too red in the face to be shown in public...but I have answered your wishes in an E-mail.
Thanks for the additional instructions Both yours and SDR's, all makes sense to me...proving that you are never too old to learn.
As far as clamping on the table of the drill press goes, I would use the T grooves with the proper T-nuts and the appropriate clamps. But your system works to.

Off topic - Space shuttle
I understand that, to date, the Space Shuttle is the most complex thing ever designed. I think I heard that on "Nova" or somethig.

jig and tt490 model
The clamp holds the leg in place. The block at the right drops in at the for left or right:
Four legs looks sweet. I can't find the blue paint:

James...
you got it!!

too red?

.
No such thing as "too red" !

Happy to see...
the quality added by the vertical grain. From previous pictures it was obvious that this was coming but it does not take away from the pleasure to see it. As to the red...I agree with SDR.
...it there any way to get the pieces in the corners better in line with each other?

The jig is up
These legs were drilled before the jig and the poor fit you see is why I had asked about drilling the holes which resulted in your jig which should solve this problem in version 3. Too late for these legs, although I may fill these holes with epoxy and redrill them with the new jig. Did I mention I got a D in wood shop?

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