6 minutes ago, Woodbutcherbynight said:

I have issues at times doing that.  (pins in wrist and arm)  Was thinking of something like a hacksaw that holds wire instead of saw blade. 

That is a good idea and it should work, just needs a reasonable tension on the wire. That is what I was thinking when I saw Kevin's post but I was thinking a Y shaped tool .

3 minutes ago, Gerald said:

That is a good idea and it should work, just needs a reasonable tension on the wire.

I have something in the research and development stages.  The tension is the part I am working the kinks out of currently.  My goal is something simple we can make out of scraps and that can accommodate various thickness of wire.  

10 minutes ago, Woodbutcherbynight said:

I have something in the research and development stages.  The tension is the part I am working the kinks out of currently.  My goal is something simple we can make out of scraps and that can accommodate various thickness of wire.  

Here is an ideas and it is cheap. Use 1/2 inch rebar shaped in a c shape. Drill a hole in each leg , stretch the wire thru the holes and wrap the excess around the bar. By the way always move the banjo out of the way when doing burn lines.

This is the rough drawing I using to make parts.  Don't have anything much to take a picture of yet.  Open to suggestions.

 

Edited January 26, 20206 yr by Woodbutcherbynight

I cannot see the tension getting there with what you have. If you have watched The Woodwrights Shop Roy has a buck bow saw with a rope for tension.

 

This could be done on a small scale and use a long bolt for the tension mechanism.

I am thinking the threaded rod will pull on the metal bar with the pivot when the hand crank is turned in.  The drawing is crude, sorry about that I never was much for mechanical drawings.  Give me a few days and I will have a mock up.  

Here is what I made and use

 

Yes that thread is what inspired me to try to make one along those lines.

The night before I could not sleep thinking about using

and old hack saw or coping saw for just that same thing.

But I decided to try the easy way first being that I had 

no experience with this and I'm glad I did. It seems that

the wire needs to wrap around the wood to get it hot 

enough to burn. I now don't think a wire in a saw will 

work very good. Even with a lot of slack in the wire

I don't think you would get enough warp around the

part to burn.

 

 

21 minutes ago, Kevin Beitz said:

I now don't think a wire in a saw will 

work very good.

I used a piece of 2 x 4 with an arch in the center and a piece of wire run between the bottoms to make these.  Got plenty hot.  Just pushed the makeshift tool into the groove until smoke came out.  Took a few tries to figure out how long to hold.  The method worked but the tool was without a handle and the wire could not be tightened easily.

 

22 hours ago, Kevin Beitz said:

The night before I could not sleep thinking about using

and old hack saw or coping saw for just that same thing.

But I decided to try the easy way first being that I had 

no experience with this and I'm glad I did. It seems that

the wire needs to wrap around the wood to get it hot 

enough to burn. I now don't think a wire in a saw will 

work very good. Even with a lot of slack in the wire

I don't think you would get enough warp around the

part to burn.

 

 

Any wire will work. Galvanized does not last long as the heat causes it to break. I use wound guitar string and the wind seems to get hot faster and lasts very well. You can use different stings for different width burns.

Edited January 27, 20206 yr by Gerald

Worked some more on the wire burn tool.  Will post a separate topic in next few days as I begin to assemble the prototype.

I finally got my inserts so I could finish my tools.

Now all I have to do is to try them out...

 

 

Looking good and I like those cap screws you used.

I made a holder also for my metal lathe for these new round carbide inserts. Tomorrow I will try again. The inserts has no - or+ rake

and I forgot to add some rake to my holder. I added some rake after I found my mistake and tried to fix it. I had to put a washer under the insert to raise it up to center again. I'm just going to trash it and start over again even though it did work. I don't like putting washers under things. 

Edited February 14, 20206 yr by Kevin Beitz

Old one and the new one with added rake...

One thing I found using round cutters they sure make HOT chips.

 

 

Edited February 14, 20206 yr by Kevin Beitz