Cutting out my circle

[ctl46 10+ year member]

I have a jasper jig and I'm ready to cut the hole for the sub. However, how do I ensure the center point for my dowel pin will be directly in the center of my circle. Normally, I mark an X from edge to edge. The circle isn't in the center of the board. Any tips?

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[alvitae 10+ year member]

If you have a speed square or something like it this works.

http://www.mathopenref.com/constcirclecenter2.html

 

[MisterE 10+ year member]

you already have a circle? i just draw a cross wherever i want it on the board and drill a hole in the center of that?

 

[Rashaddd 5,000+ posts]

Put the pin wherever you want it.

 

[Mr. Slate 10+ year member]

If you have a speed square or something like it this works. http://www.mathopenref.com/constcirclecenter2.html

Very informative.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif