Cheap carbide inserts - where's the market?

Aaaah. Him.

He has done some interesting vids in the past, but i get the impression he is sponsored by Bang Good or whatever the name of the company is. Everything is great and everything is super cheap. Two things that normally don't go in the same sentence.

Bang Good. Sounds like Porn film company to me..........

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You may be disappointed : **LINK**

https://blog.banggood.com/banggood-wiki-55786.html

MichaelG.

Bob, I’ve sent you a PM.

Everyones a critic.

I think we have to remember that this video in really about showing these tools actually do cut metal rather than how to use the lathe properly, hence the lack of a finish cut + he's hand feeding so ridges are no surprise. I confess I did flinch a bit to hear the poor lathe slow down so much

On the link did anyone notice the downwards deflection of the second drill on the initial bite?

Would that be the drill ground off centre?

I think the fact that Bob Stevenson saw the video, saw the removal / feed rate and ignored the other issues, bought them to try and found he could make clocks with them shows the versatility of the tips given carbides reputation of needing monster feeds and speeds to work properly should be applauded. I'm certain the finishes that he gets on his clock parts is indeed mirror, else he would need to power his clocks with a 1/2 hp motor and not a main spring.

Thanks Chris - interesting video. And no Gregg Wallace in sight, which is a good thing*.

I guess that reinforces my idea that no one is going to invest in such a complex and specialised process just to satisfy the hobby market. It looks like Sandvik take QC quite seriously, but I can believe that there are factories churning these things out with less attention to detail to satisfy an industrial market which doesn't need that degree of refinement. Maybe these are the cheap inserts we see on the internet. I dunno!

Robin.

*Ref is to BBC2 'Inside the Factory' if you haven't seen it - potentially interesting, but spoiled for me by by Wallace's presentation - he never gets to the interesting questions! The one on poppadums was quite thought provoking though - handmade and sundried in India, then fried over here  robotically - strange world. How hard is it to fry a poppadum?

R.

Edited By Robin Graham on 02/12/2018 22:50:45

The poppadums are probably not fried in advance because the oil in them may go rancid before they are eaten.