Date: 28-03-24  Time: 22:35 pm

Author Topic: Help me sharpen my drill bits  (Read 1237 times)

fazersharp

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Help me sharpen my drill bits
« on: 13 May 2017, 03:01:55 pm »
I have this set of colbolt drill bits http://www.toolstation.com/shop/p94153?table=no but most of them are now blunt.
Can someone recommend a sharpening gizmo to re grind them, I do have a bench grinder and stone but I can never seem to get the angle right.   
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slappy

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Re: Help me sharpen my drill bits
« Reply #1 on: 13 May 2017, 04:20:10 pm »
http://uk.rs-online.com/web/p/products/2189723/?grossPrice=Y&cm_mmc=UK-PLA-_-google-_-PLA_UK_EN_Tools-_-Power_Tool_Accessories_And_Drill_Bits&mkwid=sggAS6cXl_dc|pcrid|88057064763|pkw||pmt||prd|2189723&gclid=CNyy0JuV7dMCFdYy0wodr2gIWQ


If you are just having problems getting the angle right try something like this.

chris.biker

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Re: Help me sharpen my drill bits
« Reply #2 on: 13 May 2017, 04:57:46 pm »
I assume you have a pedestal grinder, you need to buy silicon carbide wheel for it.

celticdog

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Re: Help me sharpen my drill bits
« Reply #3 on: 13 May 2017, 06:19:15 pm »



If you've got a decent bench grinder you've got everything you need fella.

You can check the angle if you hold the business end of drill bit between 2 nuts  :eek  it forms the correct angle 120 degrees.






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slappy

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Re: Help me sharpen my drill bits
« Reply #4 on: 13 May 2017, 06:41:04 pm »
Thats a pretty good idea :thumbup

fazersharp

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Re: Help me sharpen my drill bits
« Reply #5 on: 13 May 2017, 06:48:59 pm »
Thanks for the help so far, looks like i need a  silicon carbide wheel, mine is more like a grinding stone and a bit rough.
I have seen in the past an all in one thing where I can just poke the bit into it, but thinking they are probably rubbish. 
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Skippernick

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Re: Help me sharpen my drill bits
« Reply #6 on: 13 May 2017, 09:48:16 pm »
it'll be fine if you are careful. Sharpen drills all the time at work on shitty indented grindstones due to welders sharpening their tungsten tips.


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