You can do the accordion technique without the bevels, but boy-howdy
is it purdy and Damn Strong with them.

Vinay

On Wed, Aug 4, 2010 at 6:43 AM, Elliot <[email protected]> wrote:
> I guess this is just me, but I wasn't planning on beveling any of my edges.
> Admittedly I wont get a super tight fitting joint, but I'm not really
> worried about that.
>
> It seems to me that I can get all the functionality of folding without
> actually needing to do the beveling.
>
> On 3 August 2010 13:59, Zippy <[email protected]> wrote:
>>
>> Steve, that sounds right.  You point out the key issue: all exterior
>> lines should remain untouched, full length of the original board
>> (short side 4'; long side 8'; diagonal 8.944').  All bevels are cut on
>> the interior sides of the panels.
>>
>> You're right, you could cut the bevels the way you suggest, saving one
>> cut per roof section. You are a braver man than me.
>>
>> Regarding cutting bevels:
>>
>> In case anyone is debating whether they want to do this, I was glad I
>> did it. It takes quite some time, but it was worth it in the end. Nice
>> tight fit on every joint.
>>
>> Method:
>>
>> I laid my panels, exterior side down, on top of a sheet of plywood
>> that aligned exactly with the panel edge to be bevelled. I eyeball
>> estimated the top cutaway measurement of the bevel (i.e. held my blade
>> at what I eyeballed to be 15 degrees, and too much is better than not
>> enough) then just ran the blade along the plywood edge. This worked
>> well.
>>
>> As an important suggestion to others wanting to cut bevels, use a high
>> quality box cutter blade, and keep them sharp.  There is an excellent
>> heavy duty knife made by Stanley® with the long snap away blades (I
>> got mine at Home Creepo).  The knife is big (about 10 inch, silver)
>> and cost about 20 bucks, but as I was doing the work, I was thanking
>> my lucky stars I wasn't trying to do it with a standard blade, or one
>> of those cheap dollar store snap away blades.
>>
>> Hope this helps!
>>
>> - - - - ------Zippy--------->
>>
>> On Aug 3, 10:09 am, Steve Upstill <[email protected]> wrote:
>> > That certainly clarifies things. Just to be certain I understand:
>> >
>> > * You do NOT bevel the original outside edge of the sheet-the longer
>> > ones. Those will join into the vertical joint that forms a single roof
>> > triangle.
>> >
>> > * The shorter outside edges of the original sheets will be bevelled to
>> > join with the walls. Different issue.
>> >
>> > * The diagonal on each original sheet gets bevelled. In all cases, the
>> > OUTSIDE line (from the perspective of the finished yurt) is the original,
>> > corner-to-corner diagonal line. The bevel is cut "in" from there.
>> >
>> > As a matter of interest, it seems to me that you can bevel when cutting
>> > the original sheet. Then, bevel that in the opposite direction--from the
>> > same side-- on the "larger" sheet. Instead of one straight cut and two 
>> > bevel
>> > cuts, you have two bevel cuts.
>> >
>> > Cheers,
>> > Steve
>> >
>> > On Aug 3, 2010, at 9:02 AM, Zippy wrote:
>> >
>> >
>> >
>> > >> On Tue, Aug 3, 2010 at 4:21 PM, Steve Upstill <[email protected]>
>> > >> wrote:
>> >
>> > >>> I was thinking of just offsetting the line a bit to make them
>> > >>> identical. Or am I being too anal? How worried should I be about that?
>> >
>> > > On Aug 3, 8:29 am, "Vinay Gupta (Hexayurt Shelter Project)"
>> > > <[email protected]> wrote:
>> > >> If you're cutting angles, you want to be anal about everything,
>> >
>> > > I agree. I was very anal about things being neat and perfect and
>> > > things worked very nicely. Steve, there is no issue, the line doesn't
>> > > need to be offset.  If I understand you correctly, I think the
>> > > confusion might come from you thinking that you are going to cut the
>> > > bevels in one shot when you cut the 4x8 sheet on the diagonal. I
>> > > wouldn't recommend that. The geometry doesn't work that way.
>> >
>> > > Cut your 4x8 sheet on the diagonal exactly down the middle, with no
>> > > bevel (90 degrees from the plane surface).  You now have two identical
>> > > triangles.  Flip one over and lay the two pieces on the ground with
>> > > the angled sides that you want to join together adjacent to one
>> > > another, with the underside of the roof facing up.  Identical 15
>> > > degree bevels should be cut on these joining sides, being careful not
>> > > to shave any material off the plane surface underneath (because this
>> > > plane surface will be your roof top).
>> >
>> > > Once the bevels are cut, flip the ensemble over, and tape them
>> > > together at the beveled seam. Your bevels will be invisible from this
>> > > vantage point as they will be underneath.
>> >
>> > > Hopefully that makes sense?
>> >
>> > > --
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>> >
>> > --
>> > It is not that wars are always wrong. It is that wars are always wars,
>> > good for destroying things that must be destroyed, as in 1864 or 1944, but
>> > useless for doing anything more, and no good at all for doing cultural 
>> > work:
>> > saving the national honor, proving that we  re not a second-rate power,
>> > avenging old humiliations, demonstrating resolve, or any of the rest of the
>> > empty vocabulary of self-improvement through mutual slaughter.
>> > -- Adam Gopnik
>>
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-- 
Vinay Gupta
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