Joining pentagons

Revised template, the previous was for 1mm wall tube which was a bit short to wrap around the outside, this one should suit paper or thin card

Edited By JasonB on 29/03/2023 12:20:45

Thanks again for that template Jason - I appreciate you couldn't have done more to spoon feed me a solution.

I'll cut metal over Easter and report back.

Got to love this forum,

As cruel Jason hasn't told me to stop, I'm still plugging away at this! (Have to give him my lunch money too.)

The problem turns out to be a good way of extending my CAD skills. Thanks to Andrew I've found a simple way to get FreeCAD's Part and Part-Design Workbenches to cooperate, plus found useful features in the previously unexplored Arch Workbench.

Going to attack it with Solid Edge next, which I expect will fill more knowledge gaps. And I've realised I need to grip CAD sheet-metal tools. All useful progress, even though Jason and Andrew have long since answered the original question.

Dave

Stop prevaricating and get on with the clock.

🙄

regards Martin

It will swing better with a dodecahedron shaped pendulum anyway

Now Dave is just making me feel guilty. I can use Freecad to create small scale railway bits for the 3d printer. Now it looks as though I might have been able to find the answer in there. That outcome seems grossly unlikely . . .

I am still struggling to come to terms with the fact that each part is symmetrical. I'd convinced myself one end had to be rotated relative to the other. The answer is obvious now but should have been all along. Surely I haven't been this stupid all my life. Sigh.

I am almost embarrassed to post these pics but given the help from members of the forum in sorting out what should have been a blindingly simple problem I owe a debt of honour.

The welding is truly shocking but luckily flap wheels are pretty cheap. That task will fill a few hours.

Rushed the marking out resulting in some poor relationships on the end of some parts that needed a bit of filling. First attempt with gasless mig and I struggled to get the settings sorted for what turned out to be 1mm wall thickness.

Wife hates it and wouldn't have it near the garden. So a nice idea poorly executed and not liked by the intended market. At least I am consistent.

Nice, but cleaning up the welds is going to be a pain. That's what apprentices are for!

35A and 17volts using tackwelds would do it, in-out in-out

Thanks for posting the progress, I'm sure you could sell it on e-bay as modern art.