How to make this without a cnc?
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Use a jig or scroll saw to make a pattern from hardboard or 1/4-3/8" BB plywood. Take time to make the pattern as smooth and accurate as possible.
Rough cut the thicker plywood using a bandsaw within 1/8" or less of the pattern.
Stick the pattern to the rough cut, then use a pattern bit (straight bit with a flush bearing) to follow the pattern and trim the final piece flush to the pattern.
This will be tough as Baltic Birch plywood is nasty on router bits, might splinter when rough cut, etc.
Otherwise subcontract it to someone with a CNC.
Rough cut the thicker plywood using a bandsaw within 1/8" or less of the pattern.
Stick the pattern to the rough cut, then use a pattern bit (straight bit with a flush bearing) to follow the pattern and trim the final piece flush to the pattern.
This will be tough as Baltic Birch plywood is nasty on router bits, might splinter when rough cut, etc.
Otherwise subcontract it to someone with a CNC.
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I would use a scroll saw and than use an oscillating spindle sander to finish the edges. If you make a template you are going to use an OS anyway. Cut the out side first sand than do the inside. You can not use a bandsaw unless you have some way to braze the saw blade back together when you do the inside.
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Print the pattern onto paper and glue it to the plywood ,
and then as the others have said , Scroll Saw
and then as the others have said , Scroll Saw
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60 Posts
Race track outlines for different race tracks around the world.
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31,243 Posts
bandsaw
Depending on the smallest radius, I would use a bandsaw and a 1/4" or smaller blade. No problems going around the outside....:no: Then cut right through the "track" at the finish line and go around the inside, then glue the finish line back together... :yes:
You will need a good work support table no matter which tool you use.
Depending on the smallest radius, I would use a bandsaw and a 1/4" or smaller blade. No problems going around the outside....:no: Then cut right through the "track" at the finish line and go around the inside, then glue the finish line back together... :yes:
You will need a good work support table no matter which tool you use.
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And how big are they , what size ply sheet will you need ?
They are fun and handy. There's something relaxing about sitting at a scrollsaw for a couple hours.
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They make them in a few different sizes (obviously with the tracks being different) on the website with full & half size. Leguna Seca is ~33"x36" in the full size.
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Its that the largest or the smallest , and what size do you intend to make yours ?.
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That's the full size dimensions of that track. There is also a half size version as well. I'm going to make mine based on what the person that asked me to make them wants.
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Have you considerd using a router ?
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Approximately 8 to 10 lineal feet ?
If I had to scroll saw that many lineal feet from what looks to be 1 1/2" to 2" thick plywood.... I'd find a different way. Bandsaw? Rent time on a CNC as suggested? Router and a template ?
It would be a heavy load on a scroll saw and the blades. JMO.
If I had to scroll saw that many lineal feet from what looks to be 1 1/2" to 2" thick plywood.... I'd find a different way. Bandsaw? Rent time on a CNC as suggested? Router and a template ?
It would be a heavy load on a scroll saw and the blades. JMO.
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