Plugging away on the bubinga, with the current piece du jour being the vertical divider panel in the central compartment. This board has multiple mortise and tenons top and bottom, joining to the two main horizontal divider assemblies in the cabinet.
I have recently discovered that my Wadkin PP dimension saw, pride of Great Britain and all, assembled by craftsmen in lab coats and all that good stuff, does not cut exactly 90˚ with its adjustable miter fence when the fence is in the ‘90˚ position by index pin. It cuts a near-perfect 45˚ in the 45˚ index position, however not in 90˚. Since the miter fence is not adjustable in those index pin mechanisms, and therefore depends upon the precision of those detent positions in the table for (some) angle settings, it is likely that at least one of those detent positions is not dead nuts. Added to that issue the face that the face of the miter fence casting is not square to the table surface, but then again, the sliding table casting is bowed too, so hard to know exactly what is what at this point. Grr. Oh well, just another machine to muck around with, which I will do when I have the time. I guess I can learn about scraping soon(?).
For now, I correct the out of square cuts with a plane on the end grain:
There’s something vaguely pleasing about end grain shavings:
I didn’t take any picture during the joinery cut out, save for a stage near the end where I am rough cutting the spear point miters:
Then a paring jig is used to take the miter closer to the line (but not all the way there quite yet):
Afterward, using a plane to clean up the front edge of the vertical divider board:
It was then time to start fitting up. The first part I am fitting is the upper front cross piece, which is dadoed for the two sliding doors which will be built later on:
On she goes:
A little further down – a view from the backside:
After a few adjustments, the rail could be lowered most of the way:
A view from below however reveals the rail is not fully seated yet, as it is sitting high on the spear point (just as intended at this juncture):
A little more paring of the spear point mortise ensued, followed by a few licks with the plane on the front edge:
The completed joint, as viewed from the front:
The tenons protrude for now, however they will later be trimmed flush with the bottom of the grooves after wedging:
Now for the connection for the upper rear rail, which is a single tenon:
Getting the rail started on its descent:
Fully down, or so it appears:
I think it is very close but maybe a little adjustment required yet to get a tight shoulder abutment:
A view of the same connection from the backside:
Now fitting the lower shelf’s front rail, which is twin-tenoned with a spear point:
Getting there – this view is actually of the undersurface of the rail (the parts are oriented upside down):
The pencil lines you can see indicate the lines to which the mortise will be opened up later to accommodate wedging. At this point the spear point is still a distance from closing.
A while later this connection was completed:
That leaves one more rail to fit on this set, and that will be part of tomorrow’s shop action, along with assembly #2, for cabinet #2.
Thanks for visiting the Carpentry Way. Comments always welcome.
from Tumblr http://davidpires578.tumblr.com/post/140826511584