08:08AM | 05/04/06
Member Since: 04/30/06
4 lifetime posts
im trying to build a octagon flower bed. i used the 22.5 degrees and cut each pice of wood 19.5 inches. it didnt work wont join evenly. so here we go again this time 1 want the thing to be 72 inches from point to point. so what should each piece be cut at. please help asap so i can go get new lumber thanks again

doug seibert

04:35PM | 05/04/06
Member Since: 08/10/02
843 lifetime posts
".... it didnt work wont join evenly....."

The 16 angle cuts need to be quite precise for the pieces to mate perfectly........I suggest you PRACTICE re-cutting the old pieces until you can cut the correct "angle" and "length" to achieve the perfect Octagon......(even tho this will be too small for your final planter)

What type of saw are you trying to use for this ?

For the 72" planter.....measured point-to-point.... each piece needs to be EXACTLY the same length of 27 1/2" and the same angle of 22.5º......(for some saws/guages/methods you may want to use the complimentary angle of 67.5º........That's 90 minus 22.5 equals 67.5)


08:15AM | 05/05/06
Member Since: 04/30/06
4 lifetime posts
i tried to use a miter saw. but the wood was to thick to cut with so i ended up using a cir saw. i got fince post from lowes to use for the bed. the post are 3 and 1/2 in thick.

doug seibert

08:48AM | 05/05/06
Member Since: 08/10/02
843 lifetime posts
Green landscape timbers will never keep a tight miter joint as the wood moves and dries........Maybe stacking the timbers Log-Cabin style....lapping the joints in the octagon shape and cutting off the excess.....(chainsaw or sawzall ?)

Maybe "paint" a circle on the ground with your radius of 36" and construct the octagon planter within that area........

Good Luck.......

PS.........If you're determined to cut the "miters" could Cut and Fasten TWO halves of the Octagon.....Then scribe/custom-cut the last joints between the halves to match.......


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