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A perfect circle using a band saw jig

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Project by Jeremy posted 1298 days ago 3984 views 26 times favorited 9 comments Add to Favorites Watch

I would love to give credit where credit is due but for the life of me I can’t remember where I saw this idea. I want to say it was Wood Mag but I can’t be for sure. I saw something like this before and thought what a great idea but what if I want different sizes? So I came up with this. I line up the cutting tip of the saw blade to the edge of the wood and drew a line and drilled a 3/16 hole every 1/2”. So now I can cut a perfect circle from 1” to 18”. In the picture I made a 5” but it was to big so I cut it down to a 4” just by moving the pin from 5” to 4”. Its just that easy. I tried to cut one free hand but I really didn’t like how it turned out. Thats when I made this.





9 comments so far

View lew's profile

lew

9991 posts in 2381 days


#1 posted 1298 days ago

Nice jig!

How do you attach it to the band saw table and do you align the center line with the leading edge or trailing edge of the blade?

Lew

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View Diggerjacks's profile

Diggerjacks

1742 posts in 1765 days


#2 posted 1298 days ago

Hello Jeremy

A very good jig and a good idea

Thanks for sharing

-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit

View Jeremy's profile

Jeremy

17 posts in 1516 days


#3 posted 1298 days ago

Sorry Lew I guess I left out a few things. I’ll put up more pics tomorrow. But I took some scrap 1/2” ply that I had that fit my miter grove perfect. Predrilled some holes for the screws so it didn’t expand any and attached it to the bottom of the jig to keep it stright. Then with the bandsaw off I align the jig to the leading edge of the blade to the line and put stopping clamp where I want it to stop then pull it away, put my piece to cut on and push it to the stopping clamp then turn the piece clockwise and there I have a perfect circle.

View docholladay's profile

docholladay

1286 posts in 1685 days


#4 posted 1298 days ago

I need to make one of these for my band saw. That is a great idea. I would think that you could make one that would accomodate larger holes even up to about 4 ft in diameter, but you might need have some sort of support for the end off of the saw table.

Doc

-- Hey, woodworking ain't brain surgery. Just do something and keep trying till you get it. Doc

View DGunn's profile

DGunn

73 posts in 2380 days


#5 posted 1295 days ago

Great job. I will be making one of these. Thanks for posting this.

View lou's profile

lou

340 posts in 2068 days


#6 posted 1199 days ago

Cool idea.The longer the board,the larger the circle.Thank you for the pics

View chairman101's profile

chairman101

2 posts in 975 days


#7 posted 975 days ago

I like this jig I have just made one for myself. Can I suggest with the addition of another pin and as long as the holes have been drilled square to the table rebate you could use the jig for cross cutting stock square.

View Jeremy's profile

Jeremy

17 posts in 1516 days


#8 posted 974 days ago

Chairman, Thats a great idea. Do you have any pictures? There are actually a lot of different things that could be done with this basic plan. Maybe counter sinking 2 sets of tracks and putting the kreg bench Klamps to hold down your work to get a nice even cut if you wanted to do some angle cuts.

View chairman101's profile

chairman101

2 posts in 975 days


#9 posted 951 days ago

Jeremy, thanks for your reply and New Year greeting from the UK. I have an old hand saw jig from the 60’s that uses dowels in differant possitions in order to cut angles, thats where I got the idea to add another dowel to do cross cuts. I added a toggle clamp as a hold-down, and a good tip is instead of adjusting the rubber pad every time you cut a differant thinkness of stock I use a wedge of wood to make up the differance in thicknesses.

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