Sunday, November 20, 2016

Cherry tables

A couple of cherry side tables.

Finished tables

Overall height: 28"
Top: 18" x 18"
Apron width: 14"
Apron height: 4"
Legs: 1.25" taper to .75"

The legs are mortised with 3/8" tenons and pinned with 1/4" dowels. 3/4" thick top, edged glued from 3 boards, hand planed and scraped flat. The bottom side of the top has 1/4" deep, by 2" long bevel, leaving a 1/2" thick edge. Finish is a seal coat of thinned shellac topped with  multiple coats of danish oil. The top surface was wet-sanded with 320 grit and oil to fill grain pores.

Some photos:

Pile of shavings from power and hand planing lumber
Many shavings

Clamped table bases

table bases showing dowels pinning mortises
Pinned mortises

Assembled bases and one table top

Attaching the table top
Attaching the top

Lesson learned: I've never liked the recommended "wipe with a damp rag" to get rid of excess glue. My approach is to keep excess glue and squeeze-out to a minimum, let it partially cure, then scrape it off. This time, I thought I'd try using a really wet rag and a spray bottle to clean up excess glue. Really didn't like the results: Glue embedded in the wood grain and the excess moisture caused a lot of raised grain -- both requiring a lot of sanding in some tough-to-reach places. I'm sticking with my cure-then-scrape approach in the future.

Saturday, February 13, 2016

Lathe DRO Installation

Finally decided to add a DRO to the old South Bend Lathe. When looking for info on how to add digital scales to a '40s era lathe, I didn't find much, so I thought I'd share what I came up with. The inexpensive digital scales I chose are not terribly accurate, but they're good enough for the majority of the work I do. 

The X axis was fairly straightforward: there's room on the back of the lathe to hang the scale. The Y axis was more challenging: tight clearances on the carriage led to mounting the crossfeed scale behind the carriage. Fortunately, on this SB with the rear-mounted countershaft/motor assembly there was room behind the lathe. 

Cheap but decent digital scales

Aluminum angle bolted to the tapped holes for the taper
attachment I don't own.

1/8" aluminum  extension bolted to the crossfeed carriage. The side
of the crossfeed casting was milled flat and holes were tapped
in the cast iron.

X axis hanger clamped to the rear ways.

X axis scale attached to y axis aluminum angle