clamshell catches

[Patriq]

Ra, and CLA? You got me there.

I tried some different abbreviations, but couldn't find any that suited ;-)

Rheumatoid arthritis
	RA	(astrophysics terminology) Right Ascension
	RA	radio altitude or radar altimeter
	RA	resolution advisory (in the context of TCAS)
	RA	Redeemed Assassin
	RA	Read Aloud
	RA	Reading Ability
	RA	Reading Age
	RA	Reading Alarm
	RA	Rejected Adventure
	RA	Required Attention

[Karnevil]

I tried some different abbreviations, but couldn't find any that suited ;-)

Rheumatoid arthritis
	RA	(astrophysics terminology) Right Ascension
	RA	radio altitude or radar altimeter
	RA	resolution advisory (in the context of TCAS)
	RA	Redeemed Assassin
	RA	Read Aloud
	RA	Reading Ability
	RA	Reading Age
	RA	Reading Alarm
	RA	Rejected Adventure
	RA	Required Attention

Ra/Rx = Average roughness

CLA = Centre Line Average

[Karnevil]

https://www.cnccookbook.com/surface-...e-calculators/

[Patriq]

Thanks! As non British, I don't have all abbreviations under the skin. But I guessed something very close to that effect. ;-)

[john]

If it's any comfort, I've been British for 65 years and I didnt have a clue what he was on about!

[Patriq]

If it's any comfort, I've been British for 65 years and I didnt have a clue what he was on about!

Ha ha, thanks!

[Patriq]

More questions. I have enough NOS hat I don't per se need to refurbish them. But, I thought it might be an advantage to dismantle them when reshaping the base.
So, in the image below - how did you remove the shorter pin? It seems to have been pressed out with a machine tool?
Just cut the end with a Dremel, and then there is no way back but to use a new pin?
catches
In the image below there are my new pins, and they are flat at the end. I just use a puncher at the end to widen them after they are fitted?

Finally, at the receiver part of the catches - the part indicated in the first images extends into the receiver. To my eye it seems the third hole juuuust barely might fit so that the bolt through this hole not faults the part from the other half with the handle, that pushes in here?

Don't want it too close to other end either, or I guess I'll run out of material.

[Patriq]

Only managed to upload one image. Tried three different browsers, and both laptop and phone.

I'll add the other images later when I figure out what the problem is.

[Normb666]

Patriq, you don't really need that 3rd hole. The two already there will do the job just fine!

[Karnevil]

Patriq,you can drill off the 'burred' over end with a 6mm drill,gently drill till you see the outline of the hole that is in the black handle part.Old used ones tend to be a bit seized your NOS ones may be free to rotate,grip the head with mole grips.

I bought some 5mm stainless clevis pins.
Cut them about 2mm longer than the width of the catch part then with a small centre drill (No2)in the lathe drilled a centre hole to almost 5mm diameter.
When I assemble them up I can peen over with a 8mm ball bearing.

https://www.boneham.co.uk/clevis-pin...clevis-pins%2f