Threading Bolsters

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Threading Bolsters

Post by Jeffinn » Wed Dec 18, 2019 9:39 pm

I decided to post my technique for this in case someone else wanted to give it a try. There’s probably a couple of different ways to do this, this is how I do it.
I start by clamping the knife handle with bolster into a blade vise to hold it steady. I cut the first groove parallel to the straight edge of the bolster using a jewelers saw. Once the initial groove is cut I use thin strips of duct tape to help keep everything parallel. The tape is just thick enough to allow me to use it as a guide for the thin jewelry saw blade.
Once I have all of the grooves laid out and cut deep enough I start filing the grooves a bit wider and deeper. I usually start with some triangular files and then possibly use a few other files depending on what I want the groove to look like;
Here’s the bolster with all of the grooves roughly cut in (they are all parallel even though the photo makes them look skewed);
I like to clean up the grooves to remove some of the roughness created by using files. I use an old steel knife liner wrapped with 220, then 400 and finally 600 grit papers to clean the grooves;
I do a quick preliminary bolster cleanup and then give them a quick trip through the polishing wheel.
Here’s a before and after photo of the bolsters;
Hope this was helpful!
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Re: Threading Bolsters

Post by herbva » Wed Dec 18, 2019 10:15 pm

Great tutorial and thanks for posting this Jeff! I've been wondering for quite some time how you do such a good job at making slotted bolsters. Now I have to find a jeweler's saw. Best regards and happy holidays! Herb ::tu:: ::tu::
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Re: Threading Bolsters

Post by doglegg » Wed Dec 18, 2019 10:19 pm

Jeff, you could have been a surgeon. What delicate fine work. Thanks for sharing. ::tu::

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Re: Threading Bolsters

Post by Meridian_Mike » Wed Dec 18, 2019 10:23 pm

Excellent Tutorial Jeff!
I like how you get the lines straight. I am going to try that next time I do a bolster.
I have been just going by "eyeball" to get the lines straight.
AND... I was using a small tri file free hand to get started.

I LIKE your method a lot better than mine....

2 thumbs up my friend!
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Re: Threading Bolsters

Post by 1967redrider » Wed Dec 18, 2019 10:25 pm

Great work, it turned out perfectly! Thanks for sharing your "tricks of the trade" with us. ::handshake::
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Re: Threading Bolsters

Post by OLDE CUTLER » Wed Dec 18, 2019 10:43 pm

Thanks for the instruction Jeff. I will have to try your method on my next rebuild that includes new bolsters. It really looks great.
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Re: Threading Bolsters

Post by Doc B » Wed Dec 18, 2019 10:43 pm

::tu:: ::tu:: ::tu::
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Re: Threading Bolsters

Post by jerryd6818 » Wed Dec 18, 2019 11:41 pm

I love threaded bolsters. Good job.
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Re: Threading Bolsters

Post by FRJ » Thu Dec 19, 2019 2:04 am

That looks like first rate work, Jeff. Good job.

I wish someone would have had those skills when they attempted this "decoration". ::mdm::

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Re: Threading Bolsters

Post by orvet » Thu Dec 19, 2019 7:38 am

Great tutorial Jeff! ::tu:: ::tu:: ::tu::
I had not thought of using my blade vise like you use it to help you get straight lines. Nice job of thinking outside the box! ::clapping::
It's a huge advantage having this forum to share ideas and methods with one another. Keep up the good work. ::nod::
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Re: Threading Bolsters

Post by Tony_Wood » Thu Dec 19, 2019 1:47 pm

Excellent work and tutorial.
Thanks for posting.
Now I might have to try this.

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Re: Threading Bolsters

Post by Colonel26 » Thu Dec 19, 2019 2:24 pm

Most excellent Jeff! You are a talented cutler indeed. ::tu::
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Re: Threading Bolsters

Post by Mike1234 » Thu Sep 03, 2020 5:25 pm

Impressive work. Thanks for sharing it.

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