Make a Sector This Weekend

This Saturday and Sunday, I’ll be here at the Lost Art Press Storefront running my second class on building the Cabinetmaker’s Sector. The last class was fantastic and yielded a great batch of new sectors.

I’ve had a spot open up at the last minute, and with an error on our event management website the waiting list was disabled and deleted. So – allow me to extend an invitation to one of you out there to come down this weekend and learn some toolmaking! I’ve copied the class description, tool list and cost below. A quick note on the tool list – because this is last minute, don’t be concerned if you don’t have one or two of the tools. I’ll have plenty of extras to lend out during the class.

If you’d like to attend, let me know by emailing me at I’m thrilled to be teaching this class – and I want to get a full class of new sectors out there into the world!

Brendan Gaffney

Details below:

Build the Cabinetmaker’s Sector with Brendan Gaffney
June 2-3, 2018
Cost: $300, which includes all materials. (Email me to register a spot at

In this two-day class, students will build their own Cabinetmaker’s Sector, my modernized design for the ancient geometer’s tool, used for drawing, drafting and (in my shop) the layout of dimensions and joinery on woodwork. The class will revolve around the skills of modern hand-tool makers, including careful marking and measuring, mixing metal and wood, hand shaping, finishing and (of course) how to use the tool.

Each student will be provided the wood and the necessary brass hinges and pins, everything needed to produce the sector. The first day will revolve around affixing the brass and wooden tabs into the tools, riveting the leaves together, flattening and lapping the tools and reviewing the principles behind the geometry of the sector. The second day will revolve around shaping the sectors, stamping and inking the sector marks, finishing the sectors and learning to use them in the shop. Every student will leave with a completed sector, plus the knowledge of how it works and how to use it.

Tool list:

  • Dividers
  • Shaping tools (bowsaw/jeweler’s saw, spokeshave, gouges, rasps, files, whatever you prefer for small shaping details)
  • Carving knife
  • Ball peen hammer (for riveting and stamping)
  • Smoothing plane
  • Large metal file (preferably in good, sharp condition)
  • Micron pens (02 width in black, red and blue work best)
  • Sturdy 12” ruler
  • Pencils
  • Scratch awl (or an awl you don’t mind sharpening into a scratch awl)

Optional (bring ‘em if you got ‘em):

  • Number & letter stamps
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