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shell pasting machine


pyropro

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Someone here had a shell paster using plywood gears that was a work of art but I can't find it now.

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First two pics show thumbnail in your message but fail to load when clicked on. When the third one is clicked and loaded, it acts like the only one with no nav arrows to go back to the other two.

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Fixed it. I've never seen this happen before, but the first two were the same exact attachment. Apparently having the same attachment in a post twice makes the software get hung up.

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Thanks all soon done waiting on one part.If you are at all interested let me know first 5 are sold and as it stands takes about a week to make.

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Am I right in guessing that the Pyropro pasting machine has a fixed angle between the shell holder and the tape applicator? This would certainly create a rugby ball shaped shell which may not fly optimally.

 

As an aside; I heard a little while ago that Stanley the tool makers offer a steel tape measure with feet and inches marked on the usual side but with the other side marked with pi x feet. Supposedly to let loggers determine the diameter of a trunk by measuring it's circumference. Now having seen wasp users trying to calculate how big the shell was from it's circumference, one of these measures would solve that problem instantly.

 

Stanley 10 ft PowerLock® Pocket Tape Measure (with Diameter Scale)

 

33-115 ???

Edited by Arthur
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A fixed angle is ok for smaller shells, the shape is more like a barrel than a rugby ball. For larger shells its better to use a magnet and multi axis pasting. If you paste one axis at a time on a load of shells they get chance to dry before the next axis is pasted. As long as you remember to mark where the poles are/were its pretty easy to keep track. Some homemade machines offer manual angle changes during pasting but not many alter the shell rotation speed along with the angle.

post-10522-0-32540900-1444501170_thumb.jpg

 

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A fixed angle is ok for smaller shells, the shape is more like a barrel than a rugby ball. For larger shells its better to use a magnet and multi axis pasting. If you paste one axis at a time on a load of shells they get chance to dry before the next axis is pasted. As long as you remember to mark where the poles are/were its pretty easy to keep track. Some homemade machines offer manual angle changes during pasting but not many alter the shell rotation speed along with the angle.

 

 

 

Col, Thats a most excellent example of a "Picture is worth a thousand words"!

 

Kurt

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yes,keep in mind the size of this machine(take it anywhere with no dependancy on electricity) and the fact that its cost is only $299.00!!!!!!!!!!!!!!!!!None on the market can come close,if there is one.

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Col,always splitting hairs arent we.Portable electricity is a more accurate description indeed.As in 6 volt.

Edited by pyropro
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How is it splitting hairs? You said you can..take it anywhere with no dependancy on electricity.

I guess batteries are (literally) not included ;)

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Why would I include batteries ? Ever mailed anything like batteries?They are not allowed.Out of the five sold if life gets out of my way to finish this build four are going over seas. No way would I even try to put a battery in the package to be rejected at customs. A typical 6 volt is only three bucks in in the states. I hope I havent offended you Col you know I cant tell a lie.

Edited by pyropro
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If i bought something that was reliant on batteries, i`d find it useful to know how long the battery would last. especially if i planned to use it in a field. The drain on the battery will increase with shell size and tape width. The load increase or the battery running down will effect the shell rotation speed. You seem to have designed a machine that makes life harder for the end user ;)

 

Here`s an idea of the manual cranking speeds needed for different shells based on a shell motor speed of 1 rpm.

These are with 1/2" tape: 1.5" 17rpm, 1.75" 19rpm, 2" 21-22rpm, 2.5" 26rpm, 3" 32-33rpm

Switching to 3/4" tape: 4" 28-29rpm, 5" 38rpm. Switching to 1" tape: 6" 34-35rpm.

I had a go with mine and its not easy, i think an adjustable metronome may be the way to go ;)

https://www.flutetunes.com/metronome/

Edited by Col
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