Finished project

[rdshackleford]

a manhole cover seems a bit overkill. its a tiny little speed bag, not a city bus. How about some nice aluminum plate, plasma cut circular, bevel edge. clear coated or not. all weather. would not have to be that thick, or that heavy.

[BagBoy]

a manhole cover seems a bit overkill. .

Rusty, these day we are supposed to sensitive and inclusive. A "manhole" cover is now a Personhole cover.

Right now I'm watching Late Night With David Letterperson!!!

[UK mark]

I made a number of platforms for myself, and "triangles" (tetrahedron), make the strongest support, virtually eliminating vibration with they're mounted properly to a structure. The problem is that it is more complex to integrate a height-adjustment system without compromising that fantastic multi-point strength. That's really nice, and I hope you produce it for sale and use the strength as a marketing statement. Good job!! I'd buy one to replace my now rotted outdoor platform, but I think it would need a metal drum. Been looking for an iron manhole cover to replace that drum. Sweet!

I was looking at a higher adjustable version but couldn't see how without sacrificing the strength,weight and cost to produce it
i also designed a different style of platform using 30mm thick quartz slab that's ideal for outdoor use I'll post a picture of that one too ,

[UK mark]

Previous design of speedbag platform with quartz slab drum

[Zaz]

Here's the finished project of hours of cutting angle iron to length , trial and error of cutting angles to match up, sanding, varnishing, driving around to obtain all the components and powder coating, and finally designing the logo/graphics , I did test it before getting it powder coated just in case , pleased to say it was very solid with almost no rattle/vibration and exceeded my expectations
what do you guys think ?
Pics taken today whilst at work ( laid on the floor)
50mm thick hardwood ply , currently getting quotes for real solid wood too

Nice work Mark! I like the design of your platform. Looks very solid!

[Mickey Dix]

Previous design of speedbag platform with quartz slab drum

Would love to have that setup for my deck outsidevery nice job UK Mark!!!!

[UK mark]

Tbh it's quite easy to obtain quartz slab over here and have it cut to size, plus drilling through it is easier than marble or granite

[Speedbag]

Here's the finished project of hours of cutting angle iron to length , trial and error of cutting angles to match up, sanding, varnishing, driving around to obtain all the components and powder coating, and finally designing the logo/graphics , I did test it before getting it powder coated just in case , pleased to say it was very solid with almost no rattle/vibration and exceeded my expectations
what do you guys think ?
Pics taken today whilst at work ( laid on the floor)
50mm thick hardwood ply , currently getting quotes for real solid wood too

Awesome job. Looks fast!

[Speedbag]

Ms Deville's husband built several different platforms for their use, Besides wood, he made one out of plate steel, another out of reinforced concrete. There should be photos of them on here plus there are Youtube videos of them in use. A manhole cover is several hundred pounds and in normal use requires two rather strong people to move them around, even with the purpose built pry bars that they use. Depending upon their age they can be made of cast iron, later ones cast steel. The ones at where I work all seem to be cast in India...

(actually not married....always describe as "My Friend Raul" )


Concrete
https://www.youtube.com/watch?v=6ug2YP4Ws4Q&t=13s


non-adustable
https://www.youtube.com/watch?v=NLubGsLkvkU

I don't remember what this one is made of,...but it's solid!
https://www.youtube.com/watch?v=h1qWAe7IMP8

Just for fun...
https://www.youtube.com/watch?v=l6Q4G-0_G5s