Bellow Folding 

Thanks for posting this design. I made mine a bit larger, and found that a ball point pen did the job of the dull knife quite effectively. This creased the paper along the lines without requiring me to dull one of my knives and make sure I didn't press too hard.

I like using a glass cutter for creating the crease lines. It doesn't cut the paper

Well done...!!! Best wishes from Bavaria / Germany. :-)

Thanks, Best wishes for Wisconsin, USA.

THANK YOU SO MUCH!!! great video!.

This was great help, cheers :)

Tip: be aware of the direction of the creases, score the paper to the side that the crease goes to, this means you will be flipping the paper over from one line to the next, and reversed on the other side of each corners, this will help the folding process go a lot faster and help keep the paper stronger too.

You can recover them with tyvek type bellow material fairly cheaply, if you recover the old ones yourself. Regular paper won't last very long at all.

Thank you! So generous...

thanks from France it's cleaver tuto!!!

Your bellows engine reminds me of the Brayton cycle Barber engine of 1792.. it would be great to see a working copy of that engine...

Very cool! Thank you

excelente explicacion puedes enseñarme a fabricar un fuelle para un acordeon hohner corona III

with a little stronger material i am thinking how this can be used for making a low-cost patient ventilator ....

Gracias.Thanks. Merci.

thanks man

pneumatix. really efficient design thankyou, doesnt even need stickytape!

No worries. I don't get on every day either.

Cool

I suppose for anything that needs a bellow.

just get a large spring and put a plastic sheet round it.

Went to the site, couldn't find this.

Bonjour merci pour la vidéo , j’ai essayé de trouver votre gabarit mais je ne le trouve pas pourriez vous m’aider

The easiest way to get a good seal is to unfold the bellow flat so you can roll and join the page end-to-end before refolding. It's trickier to fold this way, but it's not impossible.

Hello James! Thank you for the awesome video! I tried registering on your web site in order to download the plans, but the registration seems to be down. Also, receiving error messages when attempting to contact you via email form. Any chance you can help me obtain these plans? Thank you very much in advance

Hello its super easy way of doing bellows.where can I find the templates?

Is there there a mathematical reason why it is in a hexagonal shape?

Where it is used

Wow really?