Sanding grits conversion chart

Sanding conversion chart between grit, mesh and micron

Here’s a handy little chart I came across while helping a student figure out what micron sanding papers they had. I’ve always worked with regular wet/dry sanding paper so I’ve never committed the micron numbers to memory and how they compare to grit. This chart also includes the mesh sanding range as well. The original chart can be found on the Gesswein website. You can download the image to print or keep on your phone for quick reference.

How to make an economical rotating soldering tray

How to make an economical rotating soldering surface: soldering board and lazy susan hardward

As you may be aware, traditional soldering pans are wonderful but quite pricey ($50-60.00 for a large pan). I own one and can’t imagine working without it but they may be in short supply if you are an instructor at a facility with limited resources or on a limited budget for your own studio. In this article I’ll show you how to make one fairly economically.

You’ll need a small lazy Susan (screws included) which you can purchase at a well equipped Ace for around $5-6.00. You may have a lazy Susan on something else in your studio you really don’t need to rotate so if you can cannibalize it from something else, go ahead. I’ve pulled them off of flex shaft tool caddys before. You’ll also need a hard 12 inch SolderiteTM board which costs about $24.00. You could get away with a 6 inch board if that’s all you have. It will work just as well and costs less than $10.00 (prices taken from the Rio Grande website).

How to make an economical rotating soldering surface: soldering board and lazy susan hardward

Lazy Susan hardware taken from a rotating flex shaft tool caddy I wasn’t using and a new 12″ Solderite board.

Take a ruler and pencil and mark lines from corner to corner.

Use a straight edge to mark lines from one corner of the board to the other resulting in an "X."

Use a straight edge to mark lines from one corner of the board to the other resulting in an “X.”

Here’s the trick to centering your Lazy Susan under the board: line the screw holes up along the pencil lines so that each line bisects the holes. When all the lines bisect the holes, the Lazy Susan will be centered. No other measuring required.

Line the lazy Susan screw holes up with all 4 lines. When all the screw holes are centered over their respective lines the lazy Susan will be centered on the board.

Line the lazy Susan screw holes up with all 4 lines. When all the screw holes are centered over their respective lines the lazy Susan will be centered on the board.

Once you have the Lazy Susan positioned, insert the screws (they should be fairly short- you only have 1/2 inch thickness on the board) and secure the Lazy Susan to the underside of the Solderite board. You can pre-drill if you like but I just started squirming them in until they caught since the board material is fairly soft.

The finished rotating soldering tray.

The finished rotating soldering tray.

Put a second board on top of the first one to keep it clean so you don’t have to replace it as often. This is optional. Alternately, work on top of the board with a kiln brick.

Finished tray with protective board on top.

Finished tray with protective board on top.

Finished tray with soldering brick, which is my preferred soldering surface.

Finished tray with soldering brick, which is my preferred soldering surface.

I prefer the soldering trays with pumice so that I can level my brick as needed but this quick and economical alternative is already pretty level and works great in a pinch. It took about 5 minutes to assemble once I had all theĀ  parts.

Gauge conversion chart

Sheet gauge chart for determining metal gauge from oz designations.

For those of us who buy our copper and brass in large quantities from commercial metals companies, you may have encountered an odd way they measure thickness for our metal. At our local store, Industrial Metals, the sheets have “oz” measurements. If you’ve forgotten to bring your B&S metal gauge (remember the one for steel is not the same as the one for non-ferrous metals) you may not know what you are getting. Here’s a handy chart to keep on your phone or print out for your car so you always know what gauge you are buying. It’s a jpg so feel free to download it as you need.

 

Great book most metalsmiths probably don’t know about

Tech Text- A compilation of SNAG technical articles from 1975- 2010

I have to preface this article with a BIG thanks to Teri Jo Kinnison who alerted me to this book.

“Tech Text” comprises a collection of technical articles which originally appeared in SNAG News and previous SNAG publications from 1975- 2010. It’s available through Blurb:

http://www.blurb.com/b/1622646-tech-text-a-compilation-of-snag-technical-articles

and although the production value isn’t superb (the articles are literally scanned pages of old newsletters) the information and nostalgia factor are off the charts. Table of Contents include:

  • Diffusion Lamination (i.e. mokume-gane) by Hiroko and Gene Pijanowski
  • Shell Structures by Heikki Seppa
  • Spray Etching by Linda Threadgill
  • Interior Dies by Lee Marshall

and many more techniques to read up on from people we know and love. Enjoy!