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Member postings for martin haysom

Here is a list of all the postings martin haysom has made in our forums. Click on a thread name to jump to the thread.

Thread: Tapping M2 thread in plastic - which?
31/07/2022 09:37:42
Posted by Speedy Builder5 on 31/07/2022 07:33:23:

How do you think aeroplanes are made ? Plastic screws to hold the wings on?? Careful selection of the galvanic reaction between dissimilar metals is the solution. Many years ago, the norm was steel screws cadmium plated and passivated. I do not know what is used these days, but the answer I suspect is well known in the aircraft industry.

Bob

where i work its mainly stainless screws and nearly all tapped holes in ally are inserted. the inserts are usually coated with something before fitting. don't see much corrosion.

Thread: You think you've seen it all
31/07/2022 09:15:20
Posted by Peter Greene 🇨🇦 on 30/07/2022 23:15:32:

I think being a "foreigner" I'm misunderstanding this. As I read it there was a serious traffic jam for over an hour and some people decided to while away the time playing a small game of cricket. Is that so very bad? Were they actually affecting anyone else given that the traffic was all jammed up anyway? (I don't get the impression they caused the jam).

What am I missing?

Edited By Peter Greene 🇨🇦 on 30/07/2022 23:16:06

the bit you missed British national "sport"-----------------moaning

Thread: Clutch pedal servo
29/07/2022 08:39:08
Posted by Bill Mull on 28/07/2022 20:56:13:

Hi All,

This got me thinking , would a brake servo device help to reduce the pedal effort required? I remember remote brake servo kits being advertised in 1970s car magazines ,the Girling Powerstop being one unit I remember.

Does anyone have first hand experience of such devices and is there any reason why a remote add on brake servo unit wouldn't work in a hydraulic clutch application?

the tv program car sos did this on a mk1 zodiac

Thread: Amazing! Too Good to be True?
16/07/2022 21:17:49
Posted by Dave Halford on 16/07/2022 20:52:22:

You can get oiled plugs to fire (Chrysler 180) by pulling the lead off the offending plug about a 1/4", the extended spark ups the voltage no end, the down side is you might twitch a bit and you will need a new coil at some point soon.

but only if you sprinkle magic pixie dust over the engine

Thread: Electric plug identification
10/07/2022 22:27:28

i can't see the photo

Thread: Topslide question
10/07/2022 22:14:09

drill the head off the rest often unscrews easily if it don't drill it all out but only if you are brave

Thread: Can my pillar drill be improved
08/07/2022 11:41:21
Posted by Hopper on 08/07/2022 10:04:02:

Here is what you pay for a standard industrial quality drill press these days. LINK -- about 2,300 Quid. Yes you read that right, 2,300 Quid for a half-inch, bench mounted standard industrial quality drill press. Nothing fancy.

So when your 100 Quid hobby drill is less than perfect, start saving the extra 2,200 Quid for a proper one

yesfor what Hooper said making things well is very spendy i too have the same drill as the OP. it does well for what it is, i put a support under the table when drilling. its good enough for what i do if/when its not , its time to spend lots

Thread: Flared Pipe Connections?
01/07/2022 09:04:59

its a cheepo brake pipe flaring tool the grips will damage the pipe better ones don't have this and are available with imperial and metric jaws

Thread: Myford Super 7 Spindle Runout
20/06/2022 21:18:38
Posted by Tony Pratt 1 on 20/06/2022 20:49:03:

Chris you are quite right .0005" is neither here nor there but the guy asked a question. BTW even NASA & NPL should only use tight tolerances where appropriate.wink

Tony

and when they do its with very expensive equipment that's regularly calibrated

Thread: Target for This Month: A 3D Printed Engine
11/06/2022 11:09:01
Posted by lee webster on 11/06/2022 08:05:59:

Dave,

Many years ago I had an Airfix (I think it was Airfix) plastic beam engine powered by a small electric motor. It ran, and it squeeked like mad! I miss that little engine.

i made one of them too

Thread: No refund
11/06/2022 10:56:26

if you don't want them you could send them to me

Thread: 1/8 x 48 BSF
07/06/2022 09:55:14

they must exist as i have got one and a1/8 x 60

Thread: Mill Bolt Source?
07/06/2022 09:48:40

the draw bar on my mill is a piece of threaded bar from the local tool shop with a nut brazed on the end

Thread: Converting inch to mm in dxf and dwg files
07/06/2022 09:38:19

1 inch =25.4mm

Thread: Wooden Toolbox Choice
03/06/2022 20:46:45

could make one

Thread: New-style cover finish
20/05/2022 11:12:38

didn't even notice just had to go and get 2 copy's to compare

Thread: MEW No.316 just arrived - but what is that smell?
20/05/2022 11:07:43
Posted by SillyOldDuffer on 18/05/2022 10:05:52:

Begs the question what should a model engineering magazine smell of?

I'd like it to be a 50:50 mix of Welsh Steam Coal smoke and hot oil. Definitely shouldn't smell of either Teen Spirit or Old Fart!

smiley

Dave

i will go for hot oil, petrol. oooh i am the last one on your list

Thread: Annoying Anonymous Phone Calls
13/05/2022 17:46:24

i hung up on one and he phoned me back saying we must have been cut off . i said let me explain in simple terms so you understand. "**** ***". he understood.

Thread: METAL DUST & VFDs
02/05/2022 13:54:34
Posted by Mark Rand on 02/05/2022 12:28:18:

Ideal solution is a bloody great dust extractor on the linisher. laugh

would keep it out of your lungs too

Thread: Band saw arm weight
01/05/2022 11:41:24

with so many variables i doubt that the optimum pressure is obtainable with any machine to be found in our type of workshop. mine is not even adjustable and is never a problem. i just put the job in the saw walk away and do something else.

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