What happened to your D3/D4 today?

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Originally Posted by rapserv

pretty much any HSS drill bit (preferably fully ground) should do the job.
If they don't cut ... they're blunt and if they snap whilst drilling ... the speed is too high.
Just because they are known as HSS doesn't mean you have to use them at high speed.
If it's cutting properly their should be one continuous piece of swarf off the drill bit.
If the hole being drilled is over say 1/2"... then place a small piece of damp rag (folded into fours) first over the hole being drilled.
Drill at LOW speed and enough pressure to get that steady stream of swarf. The rag will minimise the chance of 'chatter' and provide a very smooth final hole .... and save many a drill bit or two to boot!!

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As in drill through the 4 layers of wrag?

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Originally Posted by John_D4

As in drill through the 4 layers of wrag?

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yes ... drill through the rag. It will take a few seconds to start to bite.
just keep applying a steady light pressure to keep the swarf peeling off in one piece if possible.
if the swarf breaks off ... don't worry ... just adjust the pressure up or down slightly to get that steady rate again.
Once you get used to doing bigger holes this way ... you will never look back.
It's not a nice feeling to have the drill bit chattering in the hole and then realise you're making a 'squarish' looking hole.
Cutting compound and even just oil can also be used on the rag instead of water however this tends to create smoke/fumes.
I prefer to use water .. the 'old timers' used to use spit.
This method works particularly well when drilling through/into thick metals

when the metal swarf starts peeling off don't be tempted to grab hold of it and clear it out of the way whilst drilling ... as you may well get caught up in it.
I can't recall if I made mention of it in my previous post ... but drill the steel at a very slow speed with bigger drills ... the slower the better .. you will quickly find the 'sweet spot' (drill speed)

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Originally Posted by rapserv

yes ... drill through the rag. It will take a few seconds to start to bite.
just keep applying a steady light pressure to keep the swarf peeling off in one piece if possible.
if the swarf breaks off ... don't worry ... just adjust the pressure up or down slightly to get that steady rate again.
Once you get used to doing bigger holes this way ... you will never look back.
It's not a nice feeling to have the drill bit chattering in the hole and then realise you're making a 'squarish' looking hole.
Cutting compound and even just oil can also be used on the rag instead of water however this tends to create smoke/fumes.
I prefer to use water .. the 'old timers' used to use spit.
This method works particularly well when drilling through/into thick metals

when the metal swarf starts peeling off don't be tempted to grab hold of it and clear it out of the way whilst drilling ... as you may well get caught up in it.
I can't recall if I made mention of it in my previous post ... but drill the steel at a very slow speed with bigger drills ... the slower the better .. you will quickly find the 'sweet spot' (drill speed)

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Thanks for that

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Originally Posted by John_D4

Thanks for that

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Keeping the drill bit as cool as possible is the key to keeping it sharp.

Changed out the front lower control arms on the weekend. Previous ones had done 111,000km so the rear bush was getting a little tired. Kept my previous arms at the last change so done the bushes in the spare arms in the weeks leading upto the change.
Also changed brake pads all round to akebonos after running Bendix pads for ages. Will see how these pads go in comparison

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Originally Posted by shanegtr

Changed out the front lower control arms on the weekend. Previous ones had done 111,000km so the rear bush was getting a little tired. Kept my previous arms at the last change so done the bushes in the spare arms in the weeks leading upto the change.
Also changed brake pads all round to akebonos after running Bendix pads for ages. Will see how these pads go in comparison

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You will love clean rims for ever after but they do have obviously less ‘bite’ than oems but you get used to it.

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Originally Posted by PerthDisco

You will love clean rims for ever after but they do have obviously less ‘bite’ than oems but you get used to it.

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A tip for those who have dusty pads.
Autoglym Wheel Protector - a silicone-like spray applied after a wheel wash stops brake dust sticking. Works for about six weeks. Have been using it now for about six months and it definitely works. I get about two to three full car applications from a single can.

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Originally Posted by DiscoJeffster

A tip for those who have dusty pads.
Autoglym Wheel Protector - a silicone-like spray applied after a wheel wash stops brake dust sticking. Works for about six weeks. Have been using it now for about six months and it definitely works. I get about two to three full car applications from a single can.

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Not suitable for black wheels though.

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Originally Posted by Tombie

Not suitable for black wheels though.

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Why?

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Originally Posted by 101RRS

Why?

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Discolouration