Saw mark texture

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Saw mark texture

Postby mrwoodworks » Mon Aug 14, 2017 3:20 am

Has anyone ever tried to recreate large circular saw marks as seen on old floor boards?
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Re: Saw mark texture

Postby ger21 » Mon Aug 14, 2017 3:55 am

Tilt your spindle a few degrees, and cut some large arcs. :D
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Re: Saw mark texture

Postby 4DThinker » Mon Aug 14, 2017 4:07 am

Ger21 has the same idea I do. If you don't then the saw texture becomes a 3D job that will take considerable time to cut.
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Re: Saw mark texture

Postby TReischl » Mon Aug 14, 2017 8:32 pm

If you want the burn marks too, use a dull cutter.
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Re: Saw mark texture

Postby mtylerfl » Mon Aug 14, 2017 8:51 pm

mrwoodworks wrote:Has anyone ever tried to recreate large circular saw marks as seen on old floor boards?


I've not tried that on a CNC, no.

Was just thinking maybe a hand-held disc sander could simulate the look a lot faster anyway.
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Re: Saw mark texture

Postby mezalick » Mon Aug 14, 2017 9:13 pm

I know I've made those marks plenty of times...too many to count,,,but would it be possible to post a picture of what you're looking to achieve....??

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Re: Saw mark texture

Postby Savannahdan » Mon Aug 14, 2017 10:22 pm

I have a Lucas 10-30 swing blade mill and it does a decent job of doing just that. Probably not as pronounced as one of the larger circular blades does. The blades on my mill are 24" and have 5 teeth. Lots of fun and it makes lots of lumber for me.
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Re: Saw mark texture

Postby Tailmaker » Tue Aug 15, 2017 4:02 pm

You could clamp your material at a very small angle to the table (maybe 1 or 2 degrees?) and then cut arc shaped fluting tool paths with a larger end mill. The depth of the flute should be the incline height of the material over the radius of the arc. Then multiply that path along the material and adjust the starting depth for each fluting path (find your old trigonometry text book).

Sounds like a lot of work, but with the rounded flute slope option that might look similar. After all, maybe easier to do with a table saw...
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Re: Saw mark texture

Postby Olle » Tue Aug 15, 2017 4:49 pm

Tailmaker wrote:You could clamp your material at a very small angle to the table (maybe 1 or 2 degrees?) and then cut arc shaped fluting tool paths with a larger end mill. The depth of the flute should be the incline height of the material over the radius of the arc. Then multiply that path along the material and adjust the starting depth for each fluting path (find your old trigonometry text book).

Sounds like a lot of work, but with the rounded flute slope option that might look similar. After all, maybe easier to do with a table saw...

I was thinking the same thing. Just shim the work a bit at one end, then use a large fly cutter to run some irregularly spaced half circles that just barely dig into the wood. Sounds like one of them things you need to try on some scrap wood first. :D
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Re: Saw mark texture

Postby larrybadgett » Tue Aug 15, 2017 8:14 pm

The saw marks he is probably locking for would be from a 52 inch diameter blade. Thar would be a rather large fly cutter.
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Re: Saw mark texture

Postby highpockets » Tue Aug 15, 2017 9:11 pm

Wonder if this is close to what the OP is looking for?

Image 15.png
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Re: Saw mark texture

Postby mrwoodworks » Sat Aug 19, 2017 2:33 am

Highpockets, that's a close representation of what I want to achieve. Saw mark arcs should be closer together though. Yes the marks should represent the kerfuffle of 48 inch or larger circumstances blade on wide planks. I only have a three axis so tilting the head is not an option and I don't have an aggregate head to put in the tool holder either.
Appears doable with modeling but way too time consuming.
Handheld disc sander is not consistent enough.
The incline stock idea has some merit.
I'll keep plugging at it. Thanks for all the responses.
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Re: Saw mark texture

Postby highpockets » Sat Aug 19, 2017 2:50 am

Tracy,

Attached is how I achieved the look. It's a starting point that you can work from to get what you want.

Saw Mark Texture.crv3d
(207.5 KiB) Downloaded 56 times
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Re: Saw mark texture

Postby Olle » Thu Aug 31, 2017 5:06 pm

larrybadgett wrote:The saw marks he is probably locking for would be from a 52 inch diameter blade. Thar would be a rather large fly cutter.

No, you run the fly cutter along a 52" diameter arch. You could do it with a smaller bit (like a 1/4" or so), but it would require several passes to make the cut wide enough. Highpocket's approach looks good though, not really the marks you'd get from a slightly angled saw blade, but close enough to give you the "sawed" appearance.
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Re: Saw mark texture

Postby Olle » Thu Aug 31, 2017 5:45 pm

Something like this. I did this on the fly by tilting the work piece and creating separate toolpaths/cut depths for each vector, but you should be able to use the "project onto 3D model" option if you make the model larger than the actual work piece.
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Saw cut.crv3d
(150 KiB) Downloaded 42 times
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