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Shaper Origin Notes #2: Making a Sector

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Blog entry by Rich posted 10-21-2020 03:54 AM 558 reads 1 time favorited 6 comments Add to Favorites Watch
« Part 1: Intro Part 2 of Shaper Origin Notes series Part 3: The Shaper Workstation arrived »

There is also a forum thread going on about the Shaper Origin.

This post refers to the sector. It was invented by Galileo and has been used by astronomers, navigators and craftsmen throughout the centuries.

Back before the days of calculators and online references, non-numerical solutions were the rule. Think slide rule. I have ballistic charts from the 19th century that they used to calculate trajectories—all with a ruler and a set of lines.

The sector is similar. The classics have the Line of Lines, Line of Polygons and Line of Circles. I chose for this pass to only implement the Line of Lines. It’s the most useful to the modern woodworker who already has access to a calculator for radius, diameter and circumference (Line of Circles). Same for the Line of Polygons.

I’ve always wanted to build a nice sector, but never pulled it off well enough to be satisfied with the result. I figured the Shaper was a perfect way to make one that’s accurate.

These are the arms I made using curly maple. I cut them with the Shaper Origin using a SVG design I created with Affinity Designer on my Mac. The same thing could be accomplished using Adobe Illustrator, Corel Draw and others. See the JPG export of the design below.

They are getting lacquered now and I’ll be filling the lines and numerals with Blendal powder and shellac. The idea is that I can fill the areas with the pigmented shellac and then wipe the overflow on the surface clean with DNA, which won’t affect the lacquer base. It’s a technique I use often doing touch-ups.

This is the second iteration. The first try had some errant cuts that required changes to the vector file layout. I’ll likely be doing a third version with 1/16” OD brass tube inserted into the points instead of the little crosshatches. The purpose of that is to get a perfect registration with the dividers and also to not wear with use. For that, I’ll be using a 1/16” straight cut router bit in the Shaper Origin to precisely locate and drill the holes for the inserts.

One of the trickiest parts of the build was getting the Shaper Origin registered in the hinge areas to do the milling (basically a half-lap). More about that later.

And here’s the JPG export of the design:

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner



6 comments so far

View KelleyCrafts's profile

KelleyCrafts

4380 posts in 1652 days


#1 posted 10-21-2020 04:02 AM

Very nice Rich. Just a heads up since you are being tasked with promoting the tool, it’s called Origin. Shaper is the company, Origin is the product. So Shaper Origin works but Shaper doesn’t. They also have a Workstation that’s very nice as well. Just wanted to set that straight so they don’t take it away from you.

For the record, I have one as well. Mine was purchased for a Father’s Day gift last June in place of a Hawaii trip that was cancelled. Enjoy buddy!

-- Dave - http://kelleycrafts.com/ - pen blanks - knife scales - turning tools

View Rich's profile

Rich

6142 posts in 1502 days


#2 posted 10-21-2020 04:32 AM


Very nice Rich. Just a heads up since you are being tasked with promoting the tool, it’s called Origin. Shaper is the company, Origin is the product. So Shaper Origin works but Shaper doesn’t. They also have a Workstation that’s very nice as well. Just wanted to set that straight so they don’t take it away from you.

For the record, I have one as well. Mine was purchased for a Father’s Day gift last June in place of a Hawaii trip that was cancelled. Enjoy buddy!

- KelleyCrafts

Glad you have one. If you care to make a real contribution based on your experience with the tool and/or using vector design software to educate us, please do.

P.S. Do you work for them or something? Why would you care if I call it a Shaper? Is it OK that I drive a Volvo, or does it have to be an XC90?

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View Rich's profile

Rich

6142 posts in 1502 days


#3 posted 10-22-2020 05:51 AM

Here is version 2 of the sector using the Shaper to cut the outline and do the engraving. I need to adjust the layout. I also need to come up with a better hinge solution for the final version. Still, it’s a fully functional (and accurate) sector.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View KelleyCrafts's profile

KelleyCrafts

4380 posts in 1652 days


#4 posted 10-22-2020 02:41 PM


Very nice Rich. Just a heads up since you are being tasked with promoting the tool, it’s called Origin. Shaper is the company, Origin is the product. So Shaper Origin works but Shaper doesn’t. They also have a Workstation that’s very nice as well. Just wanted to set that straight so they don’t take it away from you.

For the record, I have one as well. Mine was purchased for a Father’s Day gift last June in place of a Hawaii trip that was cancelled. Enjoy buddy!

- KelleyCrafts

Glad you have one. If you care to make a real contribution based on your experience with the tool and/or using vector design software to educate us, please do.

P.S. Do you work for them or something? Why would you care if I call it a Shaper? Is it OK that I drive a Volvo, or does it have to be an XC90?

- Rich

Wow, I don’t care what you call it. You said you had one on loan so you could help promote it. I was just adding the proper name for posterity sake in case someone wanted to actually know what tool they would be looking up, wasn’t a jab at you or anything. Figured if they were letting you use one to promote it they probably would appreciate it done with the right names.

Good luck man. Didn’t think I said anything offensive but hard to tell these days I guess.

I told some guys on another thread I would put together a blog/write up on some Origin related stuff. So I’ll put something together with computer screen shots and such and get something going on my own.

Nothing to add to this one any longer. Enjoy the tool.

-- Dave - http://kelleycrafts.com/ - pen blanks - knife scales - turning tools

View Rich's profile

Rich

6142 posts in 1502 days


#5 posted 10-22-2020 03:09 PM


Nothing to add to this one any longer. Enjoy the tool.

- KelleyCrafts

I didn’t realize you had added anything in the first place.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View Ottacat's profile

Ottacat

531 posts in 2764 days


#6 posted 10-23-2020 12:34 PM

I’m glad you started this series and I’m very interested. I don’t have a Shaper Origin yet but am seriously considering one. I don’t have room in my one-garage shop for a gantry-style CNC. Seeing it used on projects like this is quite interesting. I’d also be interested in seeing how it can assist in more traditional woodworking builds like a chest of drawers or other major pieces of furniture.

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