Parts need turning

[irving2008]

I cant change any dimensions unfortunately because these parts fit into the entire assembly, I'm sure there's room for error but it would be small and difficult for me to estimate. Anyone willing to take a crack at this?

You're going to need someone with a lathe & travelling steady (or sliding head) that can turn 20"+ between centres. Can't think of anyone here, with the exception of maybe JohnS, that has a big enough lathe. What's the tolerance on the 6.7mm?


Also, the 'cylinders' - do they have an internal bore? Or are they solid?

I know someone who has access to a cylindrical grinder, rather than a lathe, that might be able to do the long thin parts as a 'homer'.

[ams]

You're going to need someone with a lathe & travelling steady (or sliding head) that can turn 20"+ between centres. Can't think of anyone here, with the exception of maybe JohnS, that has a big enough lathe. What's the tolerance on the 6.7mm?


Also, the 'cylinders' - do they have an internal bore? Or are they solid?

I know someone who has access to a cylindrical grinder, rather than a lathe, that might be able to do the long thin parts as a 'homer'.

Hi

Yes the 2 cylinders have an internal bore, the other 3 smaller parts are solid. If there's someone you think would be able to take this on please message me and I can send across drawings and 3d models.

Thanks

[irving2008]

how long is internal bore? full length?

[ams]

Yes full length

[irving2008]

That's going to be near impossible to make unless the tolerance on the bore is very loose so it can be made from a bit of tube. to bore out a 25mm OD cylinder 440mm deep is going to need some very specialist tooling. I hope you have deep pockets...

[m_c]

As irving says, machining that depth and that narrow will be abit challenging. You may want to look to see if there's any hydraulic cylinder tubing available in a suitable size.

[Robin Hewitt]

I had 3 foot of 1.5" diameter steel rod drilled through and honed to 0.5" a couple of years ago.

I forget who did it but it wasn't expensive, I think they used a gun drill, I used Google

[irving2008]

I had 3 foot of 1.5" diameter steel rod drilled through and honed to 0.5" a couple of years ago.

I forget who did it but it wasn't expensive, I think they used a gun drill, I used Google

Hi Robin, yes it can be done, and I'd not thought of a gun drill but it needs specialist equipment. A gun drill and a lathe with a 1m+ long bed to use it isn't something most people here have access to!

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