Paging Andy Bonwick

Would you happen to have access to an M20x2.5 die, plus the doohickey
to turn it with (can't remember what it's called). Also a plain nut in
that size would be handy.

Belting the hell out of a shaft with the same thread on it doesn't
appear to have done it much good.

I must stop using hammers.

 

I can get one easily enough if I make a phone call to our workshops
but when would you need it by? I'm back on site tomorrow morning, home
for the BOSM, then away again until we go to France so getting it to
you might be a problem if you need it sooner.

It's a die nut you want. You just wind them down the thread with a
big spanner and the job's done. They're crap for cutting new threads
but for cleaning up a bit of damage they're ideal.

I'll see if I can get a die nut sent to me and try to arrange some
kind of UR transportation over the Easter weekend so you get it asap.
I might still be able to blag one day off over Easter but at the
moment it's a bit unlikely.

 

<googles>

Ah yes, a die nut looks like it might do the business. Hellgod they're
nearly 50 quid.

It's not desperately urgent, but sooner would be better than later. I
might be able to get #1 son to UR it, he commutes MK-Cambridge daily.

 

On 5 Apr 2009 17:09:21 GMT, "Simon Wilson"

snip>

Are they? As long as we've got one in the workshop and it goes back
one day it's not an issue. I treat our workshop as a kind of ukrm
stores and if they've got something somebody needs then I borrow it.

I'm working at Rocksavage power station in Runcorn for the next couple
of months so I'll only be home every other weekend and there lies the
problem. Are you going to the BOSM? That's the obvious place to hand
it over but if not there'll be someone there who lives close enough to
you to do the job.

 

Might be able to make a day trip of it.

Paging Brownz - are you going to the BOSM?

 

Depending of the level of cackhandedness employed
previously one of these might do the job. I have found
them very useful.

ebay 260384651129

http://cgi.ebay.co.uk/2-NEW-SYKES-&...ItemQQimsxZ20090329?IMSfp=TL090329136001r8977

 

I thought about one of those but I think the cackhandedness level was
off the top of the scale. I did keep the nut on the shaft but had to
belt it like hell to remove as it was partially rusted in. It didn't
help having to do it in a hurry either. I think a regular file and one
of Mr. Bonwick's nuts should sort it though.

 

They're ok if the job's spinning in a lathe but if it's stationary he
might as well use a hacksaw blade and a small file.

Obviously I haven't seen what he's fucked up but if it was me I'd
probably grind a chamfer on it and file any burrs off then put a new
nut on it taking care it didn't pick up.

 

It's this http://www.flickr.com/photos/58125090@N00/3414826545/ bad.

'scuse the camera shake.

I think grinding a chamfer + die nut should sort it. I've ordered some
new nuts but I'm not sure one would be up to the job.

 

Bwahaha. You've fucked that up good and proper.

Is it either expensive or unobtanium? If you can get hold of a new one
at a decent price then do so because short of putting it in a lathe
and machining a slightly smaller thread on it you're going to struggle
to save it.

If it's small enough to be transported then get it over here and if
WUN will let me use his lathe I'll turn a different thread on it and
supply a smaller nut. I need to look at my little book of lies and see
what'll do the job but we'd be looking at putting a 3/4" thread on it
if the pitch dimensions were roughly the same and failing that I'll
get someone to w**d it and then cut it back to standard.

Seriously: you've bent the bastard and mangled what looks like half
the thread length so anything you put on there will be struggling to
stay where it's needed. I'll fix it if I can because you've offered me
coffee....

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, Andy Bonwick

He certainly has!

No problem. My lathe is Imperial, so a 3/4" x something would be
indicated. I can put one on it if you're busy (although - quite
seriously - I'd be interested in seeing your approach to the problem,
remember I'm largely self-taught).

Simon, what is this from? If it's at all safety-critical, I would lean
heavily towards buying new. Whatever you end up with will be
significantly weaker that the original (particularly if they were rolled
threads).

 

It's just a case of me being home at the right time.

Wuss.

 

I know

It's hammers see? I don't get on with 'em.

I suspect could be both. It's from an old mower. (wot is currently in
France, though I have the shaft here.)

Yes I was thinking a smaller thread might be plan B. It's small enough,
but attached to a mower blade that looks like it might be a pig to get
off. I'll have a go.

<looks down at feet, shuffles>

Yeah. I -think- there's enough thread left at the bottom, but I'm not
sure. It holds a pulley onto a woodruff keyed shaft, I don't think it
needs to be uber tight - I was hoping running a die down it, then with
a load of threadlock it might be ok.

Well that's very kind.

 

See other post. The worst that could happen is that a mower blade could
fly off past my head at a few hundred rpm. No worries.

Curry night at WUN's one evening then?

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, Simon Wilson

Oh well, let's have a go then!

I like your thinking.

 

Sounds good. ISTR you're in Herts somewhere?

Here's the whole thing.
http://www.flickr.com/photos/58125090@N00/3415919074/

It does look a bit more er, bent, than I thought it was.

I guess it would need to be held on a faceplate of some sorts? The disc
on t'other end is about 5" in diameter. Would you have something
suitable?

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, Simon Wilson

I am, just north of Hitchin.

Yep, we can put if on a faceplate, or my 4-jaw may be big enough
(probably is). A travelling steady, or a live centre should take care of
the outboard end.

 

Haha, he's a gorilla and no mistake.

I'd have been brass drifting the end on something that narrow, not
whacking the nut :-0

P.

 

It really needed some kind of hydraulic puller/press[1] on it. Or, -one-
good thwack with a sledgehammer. I only had a 5lb lump hammer, in the
middle of a field, and not very much time.

[1] one day I will own one, oh yes.

 

It looked a bit spindly for that sort of abuse, still, as Andy noted,
it's proper fucked now

I have one, but it's the garage dwelling kind, not portable.

Cheers,

Paul.