Thread: Threading Wooden Faceplates

Originally Posted by NCArcher

You haven't got a LH 1 x 10 have you Pat? Tap that is.

Tony, no mate. All my 1 x 10 stuff is right handed. I don't think I knew about Left Handed threading till the arrival of the Yellow Peril.

Originally Posted by Hermit

I assume that's 3.5 threads per centimetre and not per inch?

Inch threads are specified as "TPI - threads per inch" (eg 1"dia by 10 threads per inch), were as metric threads specify the pitch, such as 30mm dia by 3.5mm pitch (distance between top of each peak in the thread).

Hope this helps.

Alan...

Originally Posted by Hermit

I assume that's 3.5 threads per centimetre and not per inch?

No not quite right.

It's metric M30.

30 is the diameter in mm.

3.5 is the distance between any 2 threads in mm.

The way I was taught was to select any 3 threads, measure and divide by 2.

Hope this helps.

Cheers

Tim

Originally Posted by Uncle Al

Inch threads are specified as "TPI - threads per inch" (eg 1"dia by 10 threads per inch), were as metric threads specify the pitch, such as 30mm dia by 3.5mm pitch (distance between top of each peak in the thread).
Hope this helps.
Alan...

Originally Posted by Tim the Timber Turner

No not quite right.
It's metric M30.
30 is the diameter in mm.
3.5 is the distance between any 2 threads in mm.
The way I was taught was to select any 3 threads, measure and divide by 2.
Hope this helps.
Cheers
Tim

Thank you guys, it does help. As you can tell, I'm a novice in the thread department.

By coincidence, as I write this I'm sitting here trying to puzzle out another, harder thread - that on the inlet to my new vacuum pump. I'd sort of thought it was 1/8" NPT, but after some measuring and some reading, I realise that it isn't. No taper, for one thing, and wrong dimensions. Not sure what fittings to ask for.

This is probably a stretch, but does anyone recognise it from the following pic with dimensions? I just took the photo and labelled it to email it and ask my mate tomorrow, but he's almost blind and might have trouble seeing it.

Vac Pump Fitting - Dimensions.JPG

Any help will be much appreciated.

N.B. I bought it off eBay, and the seller has no idea.

Edit: I just checked a BSPP chart, and it doesn't coincide with anything in that, either.

After more reading, 'SAE', 'JIC' or 'AN Flare' maybe? My measurement of the OD is only marginally smaller than 7/16", (11.1mm).
(The pump is a refrigerant vacuum pump.)

Steve
Try contacting Pirtek in Nowra http://www.pirtek.com.au/pirtek-serv.../?store_id=515
They only have a mobile service, but their vans are pretty well stocked with a wide range of fittings. Even if he can't supply what you want, he should be able to identify the thread and point you in the right direction for a supplier.

Alternatively, do you have an industrial supply business in Nowra?. Might be worth having a ride around the industrial estate and ask at a refrigeration or pump place, you never know your luck.

Good luck in getting your project up and going.

Alan...

Originally Posted by Uncle Al

Steve
Try contacting Pirtek in Nowra http://www.pirtek.com.au/pirtek-serv.../?store_id=515
They only have a mobile service, but their vans are pretty well stocked with a wide range of fittings. Even if he can't supply what you want, he should be able to identify the thread and point you in the right direction for a supplier.

Alternatively, do you have an industrial supply business in Nowra?. Might be worth having a ride around the industrial estate and ask at a refrigeration or pump place, you never know your luck.

Good luck in getting your project up and going.

Alan...

Thank you Alan. I appreciate the tip. Pirtek. I didn't think of them and will give them a go. I spent half the night on this, researching online, and am half-sure it's a 1/4" SAE 45 degree flare fitting.

I'll also check out Supercheap Auto, since they might have something to suit for auto air conditioning. The other possibility is Reece plumbing, they sell HVAC parts/fittings. I haven't spoken to my mate Jack yet, either.
(On an aside, I just noticed that you're in Sutherland, just up the road from him - he's in Taren Point.)

If I can't get something to suit, I still have two options. I can remove the fitting and try to match it's large bottom diameter, or I could put a hose & clamp over it.
I'll get there one way or another.

Back on topic, my tap arrived this morning. It does have a dimple in the back for my live centre, so I'm in business.

Just had a look at the Ebay site and he has put his price up to $35 + postage. Bought one anyway....

Dave

Originally Posted by MrFez

Just had a look at the Ebay site and he has put his price up to $35 + postage. Bought one anyway....

Dave

Oh, bugger. He must have noticed that the cheapest on eBay was $61 delivered.
(Plus there's only one left.)

Mine had a bit of surface rust on it, but quickly cleaned up with a wire brush & a coat of WD-40.
He should have described them as 'Good', not 'Excellent', I reckon.

After cleaning it up, I put it in a 'Snap-Lock' bag to keep it in good nick between uses.

Thanks for the tip Steve

Originally Posted by MrFez

Thanks for the tip Steve

A great invention, those Snap Lock Bags. I keep a range of sizes and store everything in them that'll fit.

Are you in Nowra ... that aint to far from me.

I too am after a 1" 10 TPI tap, I have a new 1" 8TPI tap I'd be happy to swap.

My 'vacuum chuck' I ended up just drilling a 1" hole and screwing it on by hand using a wrench for the last 1/4" till it bottomed out, then I trued it up after. This was only a small diameter so not such an issue.


Dave the turning cowboy

turning wood into art

Originally Posted by DaveTTC

Are you in Nowra ... that aint to far from me.

I too am after a 1" 10 TPI tap, I have a new 1" 8TPI tap I'd be happy to swap.

My 'vacuum chuck' I ended up just drilling a 1" hole and screwing it on by hand using a wrench for the last 1/4" till it bottomed out, then I trued it up after. This was only a small diameter so not such an issue.
Dave the turning cowboy
turning wood into art

Yep, still in Nowra, about 1/2km from the highway, on Kalandar St/Greenwell Point Rd. The main road that leads out to Culburra Beach, Greenwell Point etc.

If you pass this way, you're welcome to use my tap, or I could even post it to you and you could post it back when done. If you like, I can PM you my address & phone number.
If you pre-drill a bunch of blocks, we could tap them as a batch, enough to keep you going for a fair while. I only have a 50mm scroll chuck, though, so the blocks would need a 56mm tenon.
Edit: 2" square will fit in my scroll chuck jaws, too, if you don't need bigger.

100_5403.JPG

Yeah send a PM, love to drop in if I am passing by. If you ever heading inland come my way, Jerilderie


Dave the turning cowboy

turning wood into art

Originally Posted by DaveTTC

Yeah send a PM, love to drop in if I am passing by. If you ever heading inland come my way, Jerilderie
Dave the turning cowboy
turning wood into art

Done.