Shopsmith Forums

I think you need to cut the 'pie' from opposite sides to make the angles needed. IIWM, I would use the bandsaw.

John,

I offer this schematic of how the table saw might be used to make the angled cuts for the birdhouse roof pieces.

As others have pointed out, the pitch of the roof will determine what those angles need to be. This is just to show a way to make the cuts.

(A miter saw might be easier to use for all the cuts needed.)


Anyway, here’s my shot at it:

idcook wrote:John,

I offer this schematic of how the table saw might be used to make the angled cuts for the birdhouse roof pieces.

As others have pointed out, the pitch of the roof will determine what those angles need to be. This is just to show a way to make the cuts.

(A miter saw might be easier to use for all the cuts needed.)


Anyway, here’s my shot at it:

Please do NOT use the fence in the manner showed here, which will likely cause a kickback. This is a job for the miter gauge.

algale wrote:Please do NOT use the fence in the manner showed here, which will likely cause a kickback. This is a job for the miter gauge.

Thanks Al. I was concerned about how well this would work, as well as whether or not there was some safety/control concerns. But, at 2AM, I wasn’t able to quite psych it all out.

I had mildly considered that using a miter saw might be the best way, but didn’t have the mental energy to work out how to go about it.

At this point I’ve even considered that using a handsaw would be better.

The pieces I cut were done with the band saw as I am more confident doing this type of cut there. The layout was much like suggested by IDCOOK.

I hadn't considered the miter saw but now I will try. With a 22.5 degree angle crosscut, my 10 inch saw should be able to cut through the 5/8 x 5.5 inch cedar fence boards that I am using.

I'll keep you all posted on the results and hopefully post pictures of a completed project soon.

John

I wish you all the best on this project, John.

After reading through this post and giving some thought to what you are doing, I decided to cut up some scrap wood just to see what was so difficult.

I was very successful at cutting up the scrap wood but a did not do so well in creating an octagonal roof top. I finally got four pieces cut that sort of fit together (forming half of a roof) but it would be a real stretch to say it was a success (even half a success would be a stretch).

Something like this, perhaps with an angle added to the guiding edge, might be helpful. Procedure would need to be thought out but it seems to me like it might work very well.

http://www.woodsmithtips.com/2014/03/06 ... paign=7967

idcook wrote:Something like this, perhaps with an angle added to the guiding edge, might be helpful. Procedure would need to be thought out but it seems to me like it might work very well.

http://www.woodsmithtips.com/2014/03/06/miters-made-easy-3/?utm_source=WoodsmithTips&utm_medium=email&utm_campaign=7967

If I 'thought this out' correctly, that type jig will also create the side angle correctly when the workpiece is flipped over for the second cut and the ss table is tilted(21°). The square clamp would need to be replaced with a piece cut to the correct 'miter' angle(82°). The position of the 'fence' needs to be positioned to create equal angles from both sides.

The angles above are for the octagonal roof with 20° pitch.

[email]jerrycole@in-lineindustries.com...Has[/email] lots of free information on his site...At least he did when I last looked..

Of course he wants to sell you too.

http://in-lineindustries.com/jerrys-book-articles/

I tried the miter saw but my blade was too rough and chipped the wood. Reverted to the band saw and by trial and error thought I had it all figured out. I glued up two sets of four panels and when I tried to attach them to the roof struts, they were way off. Oh well, my neighbour will appreciate all the scrap wood I have made for his fireplace

After all this, my sixteen year old grandson has been visiting for a week, and I just found out he is studying design. One project was a birdhouse using Sketchup. He leaves tomorrow so will not be much help.

Back to square one, or put on a round metal roof.

Have fun!

John