Table angles

[Gene Howe]

Is there a chart or spread sheet for angles relative to wood thickness for inlay work? I've seen a video of cutting circles with increased angles. Is that what I should do for each of the different usually used thicknesses? 

Thanks.

[John B]

I just cut a keyhole shape into the edge of a piece of timber the same thickness that I'm going to use and adjust a few times until it wedges where I want it to.

[Dan]

I'm not sure if there's a table but you also should include blade thickness into the formula. I went back to high school geometry to determine thickness with some success. Grab some scraps of wood and do a few tests to determine the angle that works for your project.

[Gene Howe]

Thanks John and, Dan. 

[Rolf]

I created this Beveled inlay guidelines chart for myself.

I would still do a test cut 

 

 

Edited April 1, 2022 by Rolf

[OCtoolguy]

1 hour ago, Rolf said:

I created this Beveled inlay guidelines chart for myself.

I would still do a test cut 

 

 

Thanks Rolf. That will save a lot of time and create a great start point. Experimentation still a necessity but this will save headaches.

[Dave Monk]

I mainly use two pieces of wood that are .4 thick. Using a #5 blade I am setting my saw at about a 1.6 degree angle. I would imagine that can vary with saw blade brand also.  I have never had any luck inlaying thicker wood.

[timelett]

I'm relieved to see others who are struggling with inlay, being new with scroll sawing I thought it was just me. Especially thick wood, it shur is pretty cool when you know the way to do it. 

[munzieb]

Thanks Rolf. Great helpful chart.

[Rolf]

Take your time when cutting inlays and make sure not to push sideways. 

These were 1/4 into 1/4 inch material. Olson 2/0 R 28 TPI

 

 

Edited April 1, 2022 by Rolf

[munzieb]

Wow! those are outstanding!

[spirithorse]

Great question for a conversation thread, @Gene Howe

and a fantastic chart to help us, @Rolf

God Bless!  Spirithorse

[timelett]

3 hours ago, Rolf said:

Take your time when cutting inlays and make sure not to push sideways. 

These were 1/4 into 1/4 inch material. Olson 2/0 R 28 TPI

 

 

Beautiful work is this a pattern? 

[OCtoolguy]

3 hours ago, Rolf said:

Take your time when cutting inlays and make sure not to push sideways. 

These were 1/4 into 1/4 inch material. Olson 2/0 R 28 TPI

 

 

Very nice work Rolf. Both are beautiful.

 

[John B]

Another thing to consider when cutting inlays is the direction in which you cut. Because of the angle of the cut, a very sharp (pointed) turn can try and force the blade to cut across itself. I don't think I am explaining this very well, but if you set the blade at an angle and try and cut a sharp point in one direction, then the other, you will see what I mean.

[John B]

8 hours ago, Rolf said:

Take your time when cutting inlays and make sure not to push sideways. 

These were 1/4 into 1/4 inch material. Olson 2/0 R 28 TPI

 

 

Very nice Rolf.
I have a dozen of each of these type of hinges, circular and rectangle. Have had them in a box for years, just never got around to using them.

 

[Rolf]

13 hours ago, timelett said:

Beautiful work is this a pattern? 

The designs were something I created from clipart.  The box designs are John A. Nelson with some modifications by me.

I bought the hinges from https://www.nationalartcraft.com/product-index.asp  I don't think the rectangular ones are available any more.

I stopped making them as they wasted a lot of wood.  Having said that, I still have some of the hinges and should use them up. 

This was my collection. 

[Sycamore67]

This is an interesting question and discussion.  Rolf's graph is helpful.  I do have a question about the graph.  I think the width of the kerf is the important variable rather than the blade thickness. I have tried measuring the kerf and found it always to be a bit more than the blade.

I measured kerf by taking a piece of wood about 2" long, cutting in two and remeasuring  it.  

For anyone with a calculator----

I think that the angle equals the inverse sin of the kerf divided by board thickness.

Edited April 2, 2022 by Sycamore67

[OCtoolguy]

On 4/2/2022 at 10:23 AM, Sycamore67 said:

This is an interesting question and discussion.  Rolf's graph is helpful.  I do have a question about the graph.  I think the width of the kerf is the important variable rather than the blade thickness. I have tried measuring the kerf and found it always to be a bit more than the blade.

I measured kerf by taking a piece of wood about 2" long, cutting in two and remeasuring  it.  

For anyone with a calculator----

I think that the angle equals the inverse sin of the kerf divided by board thickness.

Thanks for that info. Unfortunately, 63 years have passed since the last time I used that sort of math so I'll just have to take your word for it. Lol.

 

Edited April 4, 2022 by OCtoolguy

[Rolf]

20 hours ago, Sycamore67 said:

This is an interesting question and discussion.  Rolf's graph is helpful.  I do have a question about the graph.  I think the width of the kerf is the important variable rather than the blade thickness. I have tried measuring the kerf and found it always to be a bit more than the blade.

That is why you need to do test cuts. Since different blades have different tooth offsets.  Also the quality and adjustments of a saw also impact the kerf. 

[Gene Howe]

On 4/1/2022 at 2:39 PM, munzieb said:

Wow! those are outstanding!

+1!