Tin Tuirtle Design

Cherry & Bocote Knife Block

clock June 15, 2016 05:43 by author Bald Turtle

We wrapped up a knife block for my friend Jon this week using cherry and bocote with a tung oil finish. The cherry was a couple of left over scrap boards that were not in the best of shape, the adequate for a small project like this. I left all of the boring sanding work to Jon, and he shaped the legs on the belt sander. It turned out nice and now he has a place to park that $200 chef's knife.

cherry and bocote knife block

Window trim is almost done

clock May 2, 2016 06:15 by author Bald Turtle

I should have the trim completed later today and then it will be time to spray. I am continuing with the two part process using Chemcraft's water based system for anything that is being exposed to the sun, or that has to match the beams. The "heart" brackets are ready for glue up and I think they are going to look really nice. Once the spraying is done on the trim I can install and then get the furniture in the front room back in place. Then comes the hard part, the construction of the four sliding panels. I have the cherry ready for pickup in Michigan, and I will try to get out there this week. I got a great deal from Hickory & Oak and they have been kind enough to hold it for me because of the emergency trip to China. But in the mean time I needed to mill up the old lumber and make room.

milling cherry

support brackets for bay window

oak wrap window trim

Rusty Lathe

clock July 8, 2015 15:04 by author Bald Turtle

While I was in China the roof over the garage developed a leak near the chimney and leaked water over the lathe. Removing rust from a lathe bed is tricky because you cannot remove any metal or the lathe is no longer accurate. What I chose to use was phosphoric acid and a white scotch pad. Paper towels were cut to match the ways and then phosphoric acid was dripped onto them and allowed to set for 60 minutes. Then the paper towels were removed and the white scotch pad was used gently. It worked out well and between that and the bottoms of the tail piece, tool stay etc the lathe was fixed in less than a day. Fixing the ceiling took quite a bit longer and I did a temporary caulk job to hold until the roofer can come out for a permanent repair.

rusty lathe bed

cleaned rust from lathe

Cornscala Project Page

clock May 14, 2014 14:30 by author Bald Turtle

After a year and a half (sigh), I finally put together a quick page that consolidates the Cornscala build. You can view it here.

Telecaster #2 and #3

clock January 31, 2013 15:42 by author Bald Turtle

I am working feverishly to complete Telecaster #2 for a friend's son and Telecaster #3 for a future buyer. Both guitars are still a ways from completion but the quality is first rate. The finishing process has been tricky but so far I am very happy with where it is. Initially I did a pore fill with some of the Bartletts I have saved over the years.

Pore filling telecaster

Pore filling on Telecaster #3 was done very differently, using tung oil and 220 grit sandpaper. I applied the tung oil with the sandpaper and used it to create a slurry that was pushed down into the pores.

walnut and mahogany pore fill

After the pore fill on Telecaster #2 I shot it with yellow TransTint dye using denatured alchohol as the carrier.

TransTint yellow dye guitar

Followed by shooting the back with TransTint orange, carrier modified with 30% RO water.

Telecaster sunburst

And then each coat was repeated using TransTint and laquer.

Telecaster Raspberry Burst front

Telecaster raspberry burst back

Finished measuring the Cornscala's

clock January 12, 2013 15:25 by author Bald Turtle

I had a small get together at the house for some guys who are into DIY audio. They were gracious enough to come out, bring some of their own speakers, and then do an analysis of my Cornscala's.

DIY audio event

audio analysis of Cornscala

Frequency Response

frequency response Cornscala


Cornscala Impedance

Bottom grills are in place

clock January 7, 2013 15:51 by author Bald Turtle

I finished fabricating a second pair of grills for the lower cabinets on the Cornscala's. I ruined a yard of fabric and lost a day or so by not sizing them correctly. I am just not a great upholstery guy, and I still am not happy with the results. But for now they will do and the woofers are protected. Not sure yet what I will do about the uppers. The fabric is from Bob Crites and is the same as what is currently used on the Klipsch Heritage series speakers.

Cornscala in room

Textured Paint Technique

clock January 3, 2013 05:29 by author Bald Turtle

I tried two techniques for doing the textures for the Cornscala's. I knew that the textured area would be problematic for cleaning, and I wanted to try and solve that. I also was looking at what the difference would be like between using a truck bed liner versus a pebble spray. And last I had to make sure the various layers of products would all be compatible, especially as the assembly would be complete and irreversible before the final laquer process.

This picture shows the sample piece, with the pebble spray texture on the left, and the truck bed liner on the right.

This sample sat in the corner of the shop while I finished spraying the Cornscala's, so it was covered in dust and grime. I wiped it down with a regular paper towel and Endust. It came away completely clean with very minimal fuzzing from the towel. The products and order of application is below:

I chose to use the textured paint for the speakers. A couple of things to think about. Doing it again I would go to 3 coats and maybe 4 of the Multi-Color Texture. The whole idea is to get a uniformity of texture and color so it has a nice finished look and feel. You get a much nicer even look by doing multiple light coats of the texture. The Varicure is tough as heck, and will stand up to a lot of household cleaners even though it is a laquer. I don't know that I would go wiping it off every day, but for normal cleaning I would think it should last for a very, very long time.

The truck bed liner is a good option, but it is hard to notice the texture without angled light. It ends up just looking like flat black paint from a distance. I tend to want a more grainy surface and now that I am comfortable with being able to clean it this is a good choice for me.


clock January 3, 2013 02:30 by author Bald Turtle

Getting ready to do the neck pickup route on Telecaster #3. This body is black American walnut over mahogany. I would like to do a Lollar pair in this, maybe with a humbucker in the neck position. I need to finalize that choice today so I can finish the neck milling and move on to finishing both of these guitars.

Telecaster body

The Cornscalas sound great!

clock December 22, 2012 03:00 by author Bald Turtle

I really want to do a long post or project page and explain exactly how these all went together, but there is just no time at all for that now. Here are a few pictures. They sound so, so good.

Corncala with cherry and walnut cabinets

Cornscala satin laquer finish

I love the backs. The whole design has this vintage feel, and they sound great with many types of music. I still need to break them in to see what I really have, and I would like to get someone to measure them sonically.

Corncala backs with brass screws

The little mini audio stand works well and it gave me an extra 5 inches or so on the front so I could tighten everything up.

audio rack made with cherry and walnut

<<  July 2018  >>

View posts in large calendar
The Turtle's Shell

Search the Turtle

Search the Turtle

The Turtle's Postings
Front window assembled
Spraying Bay Window Parts
Cherry & Bocote Knife Block
Chicken & Sweet Potato Stew
Window trim is almost done
Halibut with Purple Potato
Back to Missouri
Front Window Project
White Chili
Casserole for Movie Night

Essential Woodworking
David Savage - Furniture with Soul
Marc Adams School of Woodworking
David J. Marks - Gallery
Hickory & Oak Sawmilling
Lee Valley - Tools and Hardware

Essential Cooking
Essential Beijing
City Weekend Beijing
The Hutong
Beijing Air Quality Index
An American Doctor in China