Dent Balls

TotalEclipse · 04-18-2005, 02:34 PM

A quick question, What's the best material to make dent balls from?
I have seen them in stainless steel and hardened steel.
I like the idea of stainless but has anyone had problems with them?

gregc · 04-18-2005, 02:48 PM

Well, just a thought. Stainless is non-magnetic, so if you planned on using the balls and magnets, steer clear of the stainless.
gregc

TotalEclipse · 04-18-2005, 03:18 PM

Nah, i'm talking more the threaded style balls to go on rods.

Manny Laureano · 04-18-2005, 05:33 PM

Ai_Dygress · 04-18-2005, 06:49 PM

This thread screams for response, but .....

Its overly obvious of what the conotation can be.

Mr Laureano has it right..

TotalEclipse · 04-19-2005, 12:11 AM

Oh grow up guys!!!!!!!

old geezer · 04-19-2005, 09:14 AM

I am not a trumpet tech, but I am a machine repairman. I would stay away from stainless. I have friends that build street rods and show bikes and every time they have used stainless bolts or nuts [because you can polish them and make it look like chrome],the bolts and nuts if put under any strss at all, the threads stretch and the bolts deform. Stainless is not a strong metal like most people think so I personally would go with hardened steel. If a qualified horn tech has better info please post, I do not want to miss lead anyone. also there are many grades of stainless and some stainless even rusts. old geezer Dave

Mikey · 04-19-2005, 11:46 AM

Yeah, rusty dent balls are a b*tch.

TotalEclipse · 04-19-2005, 12:16 PM

Yeah low grade SS rusts real good (302,301)
I have plenty of 431 grade stainless that I am thinking of using, I'm just not looking forward to threading it!

Tootsall · 04-19-2005, 01:07 PM

I reckon I'd have to ask "Why use stainless?" After all, mild steel is easily machineable and still so much harder than brass that it would seem to me to be a more obvious choice if you are making your own. If you happen to be able to "lay your hands on" a nice set of stainless balls (perhaps from a bankrupt bearing retailer?) then of course that's what you'd go with. But I do agree, it's going to be a royal pain in the backside to try to drill and thread those things.

In any case, tool steel or machine steel is what you'd have if you used ball bearing balls; stainless is notoriously poor at fatigue resistance (not an issue for your use but one reason why it isn't used for bearings). Reckon you could take a set of machine steel balls, have them annealed (softened), then machine and thread them followed by a quick retempering.

Or maybe just see if you can buy a set from Ferree's Tools and save a lot of headache.

04-18-2005, 02:34 PM	#1 (permalink)
TotalEclipse Pianissimo User Join Date: Mar 2005 Location: Brisbane in OZ Brand: ECLIPSE loud and proud Posts: 130	Dent Balls A quick question, What's the best material to make dent balls from? I have seen them in stainless steel and hardened steel. I like the idea of stainless but has anyone had problems with them?

04-18-2005, 06:49 PM	#5 (permalink)
Ai_Dygress Pianissimo User Join Date: Apr 2005 Location: IL Posts: 63	This thread screams for response, but ..... Its overly obvious of what the conotation can be. Mr Laureano has it right..
	__________________ Alas...Ai Dygress

04-19-2005, 09:14 AM	#7 (permalink)
old geezer Pianissimo User Join Date: Dec 2004 Location: Indianapolis,In. Posts: 174	I am not a trumpet tech, but I am a machine repairman. I would stay away from stainless. I have friends that build street rods and show bikes and every time they have used stainless bolts or nuts [because you can polish them and make it look like chrome],the bolts and nuts if put under any strss at all, the threads stretch and the bolts deform. Stainless is not a strong metal like most people think so I personally would go with hardened steel. If a qualified horn tech has better info please post, I do not want to miss lead anyone. also there are many grades of stainless and some stainless even rusts. old geezer Dave
	__________________ L.A.Benge 2ML 16389 L.A.Benge 2MLP 11745 K- Allmen 1414 Yamaha 231 Flugel 15383 Olds Amb. Cornet 50734

04-19-2005, 11:46 AM	#8 (permalink)
Mikey Forte User Join Date: Oct 2003 Posts: 1,861	Yeah, rusty dent balls are a b*tch.
Mikey Forte User Join Date: Oct 2003 Posts: 1,861

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04-18-2005, 02:48 PM	#2 (permalink)
gregc Mezzo Piano User Join Date: Apr 2004 Location: New York, U.S. of A. Brand: Lawler Bf & Flugel Bach C Posts: 548	Well, just a thought. Stainless is non-magnetic, so if you planned on using the balls and magnets, steer clear of the stainless. gregc

04-18-2005, 03:18 PM	#3 (permalink)
TotalEclipse Pianissimo User Join Date: Mar 2005 Location: Brisbane in OZ Brand: ECLIPSE loud and proud Posts: 130	Nah, i'm talking more the threaded style balls to go on rods.

04-18-2005, 05:33 PM	#4 (permalink)
Manny Laureano Utimate User Join Date: Sep 2004 Location: USA Posts: 5,989

04-19-2005, 12:11 AM	#6 (permalink)
TotalEclipse Pianissimo User Join Date: Mar 2005 Location: Brisbane in OZ Brand: ECLIPSE loud and proud Posts: 130	Oh grow up guys!!!!!!!

04-19-2005, 12:16 PM	#9 (permalink)
TotalEclipse Pianissimo User Join Date: Mar 2005 Location: Brisbane in OZ Brand: ECLIPSE loud and proud Posts: 130	Yeah low grade SS rusts real good (302,301) I have plenty of 431 grade stainless that I am thinking of using, I'm just not looking forward to threading it!

04-19-2005, 01:07 PM	#10 (permalink)
Tootsall Fortissimo User Join Date: Oct 2003 Location: Yee HAW! Posts: 4,641	I reckon I'd have to ask "Why use stainless?" After all, mild steel is easily machineable and still so much harder than brass that it would seem to me to be a more obvious choice if you are making your own. If you happen to be able to "lay your hands on" a nice set of stainless balls (perhaps from a bankrupt bearing retailer?) then of course that's what you'd go with. But I do agree, it's going to be a royal pain in the backside to try to drill and thread those things. In any case, tool steel or machine steel is what you'd have if you used ball bearing balls; stainless is notoriously poor at fatigue resistance (not an issue for your use but one reason why it isn't used for bearings). Reckon you could take a set of machine steel balls, have them annealed (softened), then machine and thread them followed by a quick retempering. Or maybe just see if you can buy a set from Ferree's Tools and save a lot of headache.

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