Tormek Projection Jig

[David Bedrosian]

As a hobbyist woodworker, I like to maximize my efficiency when I'm in my shop.  That's one of the reasons I bought my T-8; it works superbly with the SE-77 jig to sharpen chisels and plane irons.  When I use the jig, I want to match the existing bevel angle of the chisel or plane iron to minimize the amount of steel that I need to remove to get back to a sharp edge.  I can do that using the angle setting gauge or by eye with a sharpie, but I wanted a faster and more accurate way to get the desired grind angle so I designed this Tormek projection jig.

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The jig features removable angle blocks that are held in place with magnets.  I made blocks for the angles that I use most often – 20, 25, 30, 35 and 40 degrees. The jig is easy to use and I find it works best clamped in a vise since it leaves both hands free. Two strong magnets hold the chisel or plane iron in place which allows me to tighten the knobs on the SE-77 jig. I don't have to rely on the shoulder on the SE-77 jig to get a square grind; instead, I make sure the cutting edge is touching the top of the angle block as shown below.

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The jig works just as well with skewed plane irons.

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To prevent dents and wear of the angle blocks, I added a strip of UHMW tape to the top surface.

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With the chisel or plane iron secured in the SE-77 jig, I can start grinding without further adjustments to the Tormek. Of course, the jig relies on the support arm being at a fixed height relative to the grinding wheel and I find the TTS-100 turning tool setter works best for this. 

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I have a second support arm for my honing wheel and it is also set using the TTS-100 so I can sharpen and hone at the same angle without making any adjustments to my T8.

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I've made a YouTube video showing more of the details of the jig

With this new jig, I'm sharpening more often but it's taking me less time so I can get back to woodworking.

Thanks for checking out my jig and all the best for 2024,
David

[RichColvin]

Dedicated USBs with collars locking the TTS-100 settings are also recommended.

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[cbwx34]

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Of course, the jig relies on the support arm being at a fixed height relative to the grinding wheel and I find the TTS-100 turning tool setter works best for this. 

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Pretty cool.

Calcapp (as well as jvh's TormekCalc) has a calculator that can be used to set the USB (support arm).  For example...

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Would work well with your setup, (as an alternative to the TTS-100).

[David Bedrosian]

Dedicated USBs with collars locking the TTS-100 settings are also recommended.

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Great idea with the dedicated USBs

David

[David Bedrosian]

...
Of course, the jig relies on the support arm being at a fixed height relative to the grinding wheel and I find the TTS-100 turning tool setter works best for this. 

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...

Pretty cool.

Calcapp (as well as jvh's TormekCalc) has a calculator that can be used to set the USB (support arm).  For example...

You cannot view this attachment.

Would work well with your setup, (as an alternative to the TTS-100).

Thanks for the links. I worked out the distance for each angle using the angle setting gauge but this would have been faster.

David