Drilling metal round 2

K

kaizo

Joined
Oct 17, 2014
Messages
798
Hi everyone :) So I previously tried drilling using a carbide bit on a Sandvik 12C27 and 14C28N and after following some advice I tried drilling the blade blank. Unfortunately this didn't work very well as the drill bit was swirling on the point of contact. From the feel of it I think the drill press was too flimsy for the job. I was using one of those dremel drill press that isn't that stable. I am thinking of buying a bench top drill press like the one below but do you think it would be able to drill through metals (440C, elmax, brass, nickel bolsters and blue paper 2 etc...)? (It has to be a small drill press due to budget and size since I am only a hobbyist I'm afraid...).

http://www.amazon.co.uk/Silverline-262212-Drill-Press-250/dp/B002QRYEBQ

The one I am using is:

http://www.toollineuk.com/product.p...c-5jmEWJJY0jLPvBcacdqoiSE7oPvAY1K9xoCkpTw_wcB

Thank you for your help everyone! :)
 
drilling into hardened steel is not that big of a deal IF you have a decent set up drill press.and some medium grade carbide. the one in the picture could work,you might find it annoying since the clamp that holds the table likes to come loose.carbide is very hard but fragile as in it takes a very high speed/no coolant.if it catches while drilling it can destroy the bit.
 
That Dremel drill press set up looks very sketchy.
Get the best drill press that you can afford and drill slow speed with steady and firm pressure, add coolant by hand with a brush or a squeeze bottle.
Best possible solution would be to draw the temper back where you need to drill first.
 
Pinoy Knife said:
drilling into hardened steel is not that big of a deal IF you have a decent set up drill press.and some medium grade carbide. the one in the picture could work,you might find it annoying since the clamp that holds the table likes to come loose.carbide is very hard but fragile as in it takes a very high speed/no coolant.if it catches while drilling it can destroy the bit.
Click to expand...

Hi thanks for the reply :) would you think a stack of books under the platform to prop it up would do the job?
 
leifjl said:
That Dremel drill press set up looks very sketchy.
Get the best drill press that you can afford and drill slow speed with steady and firm pressure, add coolant by hand with a brush or a squeeze bottle.
Best possible solution would be to draw the temper back where you need to drill first.
Click to expand...

Thanks for your reply :) I'll give that a go as well.
 
You just need to use a center punch, to mark the steel/ add a dimple where you want to drill.
Then your drill bit wont "float" on the surface of the steel when you try to drill, because it will be in the dimple :)
 
Use a center punch, use coolant paste and use cobalt drill bits. (Hss-co) buy them online, much cheaper then shops
 
Are you trying to drill hardened steel or a blade blank pre-heat treat?
You definitely need a good drill press, and a good set of HSS drill bits.
 
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