Cheap Tools …….. Grrrrrrrr.!!!!!

[Nick_GParticipant @nick_g]

[Nick_GParticipant @nick_g]

.

This evening this happened to 'slim body' live center.

And no I was not being a hooligan.!

Cheap tools. – Are they worth it.? I am fast coming to the conclusion they are more trouble then they are worth.

I also have a tool holder (from the same supplier) that has more movement in it than a New Orleans harlots hips on a Saturday night.

Nick

[Ady1Participant @ady1]

You pays yer munny and you takes yer chances with the cheep tools

I've had some great bargains as well as a few lemons, and as the usage is only amateur most stuff suffices

you might be able to replace the broken bit with a length of silver steel

[John Stevenson 1Participant @johnstevenson1]

Turn it into one with replaceable centres of different forms.

[FMESParticipant @fmes]

What did you do, drop it?

[JasonBModerator @jasonb]

Maybe they did not temper it?

Edited By JasonB on 08/12/2014 07:42:45

[SteveWParticipant @stevew54046]

Nothing wrong with inexpensive but cheap is a different matter! I find inexpensive tools from the 'usual suppliers' generally OK; some of the 'best' are just too expensive for my budget.

SteveW

[Nick_GParticipant @nick_g]

Posted by JasonB on 08/12/2014 07:42:32:

Maybe they did not temper it?

It tested mine.!

Nick

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Nick_G on 08/12/2014 00:18:48:

This evening this happened to 'slim body' live center.

.

Nick,

I can't be certain from your photograph, but that looks remarkably like a 'brittle fracture', and the material looks like cast iron. … If I'm right, it's an "interesting" and "economical" choice of material.

Blessed be the Bean-Counters; for they shall inherit the mass market.

MichaelG.

[Bob Brown 1Participant @bobbrown1]

Brittle fracture can occur in large items as well as small, scary bit I think I worked on a similar vessel if not this one in the early 70's

Edited By Bob Brown 1 on 08/12/2014 10:27:28

[Nick_GParticipant @nick_g]

Posted by Michael Gilligan on 08/12/2014 10:07:12:

.

Nick,

I can't be certain from your photograph, but that looks remarkably like a 'brittle fracture',

I am far from being a metallurgist but I would say you are right.

It happened while I was taking a 20 thou cut in en3. Tool was sharp and producing nice swarf so it was not as if it was under load with the tool bulldozing its way along. – It just, it seems gave up.

For the reason of curiosity and noting else, if you wish PM me your postal address and I will send it to you to cast your more qualified eye over it if you wish.

Nick

[Michael GilliganParticipant @michaelgilligan61133]

Cheers, Nick

P.M. sent

MichaelG.

[Carl Wilson 4Participant @carlwilson4]

With regard to tools, "Buy the best and cry once" is not a bad maxim.

[JohnFParticipant @johnf59703]

I agree it looks to me to be poor or incorrect heat treatment, most probably a crack has developed during the quenching process. Or it could have been incorrectly tempered and tempering embrittlement has occurred. This happens at certain temperature bands on alloy steels where the tempering process causes the material to become more brittle even though the tempering temperature is going higher,

Normaly as the temperature rises the steel become softer and more ductile but as I once heard said on t'other side of the pond Mother Nature threw us a curved ball ! Thus certain, mainly alloy steels have this feature, if my memory is good it's mainly between 240 & 330 deg C but there is great deal more to it than just avoiding this band of temperature and my memory of this is a little dim, I know what I need to know for the heat treatment I do now and anything more I would have to dig out the books of 50 years past !

John

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Carl Wilson 4 on 08/12/2014 11:21:01:

With regard to tools, "Buy the best and cry once" is not a bad maxim.

.

Carl

[quote from another thread]

Nice sectional view of the Gepy construction, here. They are things of great beauty, especially the female of the species. MichaelG.

[Chris TriceParticipant @christrice43267]

I use a Gepy. First class quality and worth every penny.

[Gordon WParticipant @gordonw]

It does look like a brittle fracture, and on my photo looks like it started from an edge fault, but no use knowing that. It probably is just bad luck, how many are made and how many fail? I've had top quality stuff fail as well as cheap.

[Capstan SpeakingParticipant @capstanspeaking95294]

Posted by Nick_G on 08/12/2014 00:18:48:

This evening this happened to 'slim body' live center.

Well on the positive side you have a new project to make a new spindle

Silver steel should do nicely. Just harden the tip.

M.

[JasonBModerator @jasonb]

But is the Gepy a slim body, looks to me like a standard sort of dia body which would be about 40mm on Nicks MT3 rather than the 25mm of his slimbody which won't allow you to get in so close.

J

[Nick_GParticipant @nick_g]

Posted by JasonB on 08/12/2014 17:59:09:

his slimbody

.

Those days are gone Jason.

Nick

[Nick_GParticipant @nick_g]

Posted by Chris Trice on 08/12/2014 13:57:26:

I use a Gepy. First class quality and worth every penny.

Go on. – Tell me.! ……….. How many beer vouchers.?

Nick

[JasonBModerator @jasonb]

You know what they say. If you have to ask………………………………..

[OuBallieParticipant @ouballie]

I just had to look the prices up, but could only find a 2008 list, and then had to go outside to catch my breath.

Geoff – Talk about doubleR prices

Wow – Smilies now behaving themselves, so something must have been fixed.

[Chris TriceParticipant @christrice43267]

You get what you pay for at both ends of the scale. I bought mine new but it was at a bargain price (relatively).

[norman valentineParticipant @normanvalentine78682]

I like cheap tools. I bought an angle grinder from B&Q it cost £18 and came with a 2 year guarantee. After 2 months of heavy work it burnt out, I returned it and it was replaced. 6 months later the replacement burnt out, I took it back but the did not have any replacements in stock. They returned my money. That's not bad, 8 months use of an angle grinder for free! I will certainly buy another.

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