A tapered bellows with square folds is geometrically impossible.
A tapered bellows with square folds is geometrically impossible.
Steven, this is the most widely used type of bellows folding in the past.
The Deardorff's bellows is made in this way. If the bellows is fold in this way, it should be possible to be drawn? Yes?
This is how it looks, but how is constructed?
Is it possible that we have already lost this human knowledge?
Deardorff V8 bellows ribs:
Full with mission!
The material usage is the same but the folding is different.
Steve.
The construction is completely different.
Full with mission!
I have a lot of LF and ULF square bellows. To make tapered bellows, the downfold has to be a few mms longer than the upfold - perhaps even more than this.
Example:
25x25cm bellows size at the rear standard, reducing to 15x15cm at the front standard. Say 15 folds. Each fold must reduce by 10/15 cm, which is approximately 0.7cm. This becomes a "drop" of 3.5mm at each side of the bellows. I don't think a square fold is possible - or, if it is, look and function well.
Hello,
After long and unproductive search of information for geometrical way of constructing a tapered bellows with square corners we decided that we'll try to make it according to the information in the Deardorff pdf files, which we've found on the site of the master, Kurt Mottweiler. Although much more challenging and time consuming and after a long period of efforts in understanding the method, our work was crowned with success and here it is the result. You can see all the pictures we've made during the build on our blog
Full with mission!
Looking back at the "table layout", I can see how it was done.
4 pieces with irregular triangular cut outs.
Precise markings for the edges of assembling tape - these need to be visually marked.
A very slow and careful application of tapes - and perhaps on the reverse side as well?
PS? Your last posted photo doesn't show up.
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