Member postings for David Millar 3

My very rough, back of an envelope, no responsibility implied or offered, gives a circa 6mm deflection on 3 no. 50*50*3mm SHS, 3m long, carrying 67kg per metre.

Hi Rowan,

would electrical trunking suit?

David

Is the solution somehow "baffling"?!

Would a small ammo box work? They're about 150x150x300 but the orientation may be wrong.

David

Thanks Guys.

Great advice from all and it's got me moving forwards.

Thanks all.

I'll go with 10mm to start with. As mentioned above, they will fit with shims and will always be useful.

I may try 12mm in the future but I'll start with 10mm.

Thanks again.

David

Thanks Andrew

That makes sense.

Hi There,

I've recently acquired a new (to me) HBM 250-550 lathe.

It came with a miss-match of assorted tooling ranging from 6mm to 12mm.

The manual I've downloaded lists optional extras, including a set of 10mm tooling.

I've compared the 12mm tool to a centre mounted in the tail stock. The cutting edge is very slightly lower than the centre. A shim of drinks can aluminium under the tool looks like it would bring the cutting edge up to centre. This is only based on trying the single 12mm tool available.

My questions are, should I go for 10mm or 12mm tooling? Does anyone have a HBM 250-550, and if so, what do you use?

Kind Regards

David

I recently replaced the lamp holder in my bathroom fan with integrated light. The lamp holder looked identical to the pic the OP posted.

I sourced a replacement from a local electrical trade wholesale outlet.

I had presumed it was 12V but didn't look closely at it. It may be 24V.

David

Does steel wool come from hydraulic rams?

Scaffold tube is 48.3mm with about 3-4mm wall thickness. Could you turn that down?

It looks like part of a fishing float but not sure if you'd use that "professionally"!

I use "The Cat Sat On An Orange And Howled Horribly" laid out in a 3x3 grid

TCS

OAO

AHH

Thank you Mr Short of Mortimer Comprehensive School!

Hi Steve. Good to hear from you. I'm based in Skerries so it sounds like we're in the same neck of the woods! I'm new to all this and in the process of building a workshop. I have an old mini lathe which I picked up about 20 years ago in the UK. I've played with it but want to become more skilled. I've recently picked up a mini mill (in Ireland) but it took a long time watching the likes of ebay, facebook market place and donedeal.

Anyway, all the best and give me a shout if I can help in anyway. My mill is likely too small for your needs but you're welcome to use it if it did.

David

Hi Philip.

I've never used one either but I watched a doubleboost video on youtube yesterday where John set one up.

He mounted the work in the chuck, set the steady around the work piece, close / adjacent to the chuck. Adjusted the steady so the fingers just made contact with the work piece. Then moved the steady to it's desired location. The logic being that the workpiece and chuck would be very close to concentic close to the work piece and errors increasing as you move away from the chuck.

Hi all. Just to give you an update. I didn't have easy access to a die do I spent an hour dressing the problem area of the thread with a flat hand file and it seems to have done the trick. It's 99% as it should be. Runs freely apart from slight resistance over about 1/4".

I identified the problem area by screwing into the "captive nut" section until I felt resistance then backed the thread back out again to dress it then tried advancing it again.

I couldn't see much wrong with the thread but there must have been something!

Thanks again to you all! Much appreciated.

Thanks for that John. I'll have a close look as I strip it down. I hear what you say about, if it was stretched, the thread being out of phase beyond the streched area. That doesn't seem to be the case. The thread is tight over an inch or two, then runs freely again. Perhaps the thread profile has been damaged rather than stretched.

Food for thought!

Thanks to you all. I'll let you know how I get on.

Thanks all. That'll be a nice lockdown project

Thanks Jeff. I'll check that when I strip it down.

Thanks Howard. I guess I've got nothing to lose from trying to recut the thread. I'll give that a go.

Thanks to you both.