omega0684
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| posted on 23/4/06 at 03:35 PM |
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drilling the chassis rails
hi all,
i have a little problem, i am at present drilling holes in the chassis to fit the body panals. i am using titanium drill bits which are gold plated,
after drilling one side of the chassis to trial fit the passenger side panel my drill doesn't seem to want to drill any more holes! the drill
bit looks fine and there is nothing wrong with the drill, so what has happened? ive gone from taking a few seconds to drill a hole to several minutes!
can any body help
ATB Chalkdust
I love Pinto's, even if i did get mine from P&O!
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k33ts
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| posted on 23/4/06 at 03:36 PM |
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sounds blunt sharpen it or replace
tukcustoms.com
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omega0684
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| posted on 23/4/06 at 03:39 PM |
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i only bought it last week,  i dont want to be buying new drill bits every week, surely this isnt the way that drill bits are designed to be, going
blunt after drilling 30 holes or so
I love Pinto's, even if i did get mine from P&O!
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omega0684
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| posted on 23/4/06 at 03:42 PM |
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how do i go about sharpening it?
I love Pinto's, even if i did get mine from P&O!
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Surrey Dave
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| posted on 23/4/06 at 03:47 PM |
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Not being funny , but have you put the drill in reverse by accident?
When I built my car I bought some Bosch (silver) metal drills and 2 did all the riveting, best drills i've ever had.
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omega0684
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| posted on 23/4/06 at 03:48 PM |
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no drill is not in reverse
I love Pinto's, even if i did get mine from P&O!
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stevec
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| posted on 23/4/06 at 03:51 PM |
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Alex if they are the Titanium bits that screwfix do Ibought some and they are not that good.
I got some really good quadcut ones and they wee though anything.
How are you doing anyway?
Steve,
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k33ts
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| posted on 23/4/06 at 03:52 PM |
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the speed of the drill will do alot of damage if its going to fast
it will make it to hot
sharpening is a bit of an art prob better of buying a new one
tukcustoms.com
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Taz Surfleet
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| posted on 23/4/06 at 03:58 PM |
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Hi Alex
something like this may help though the size of bits youre using you can pick packets up for less than a tenner
link
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Jon Ison
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| posted on 23/4/06 at 03:58 PM |
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If the bit is blunt, (sounds like this is the case) then you will also "work harden" the area you are drilling making the problem even
worse, stainless is a pig for this, follow the advice given and buy a sharpener, doing by hand is a black art and cant be described in words its a one
too one thing and plenty of practice, try drilling at much lower speeds in future too.
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Danozeman
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| posted on 23/4/06 at 04:10 PM |
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I found that my bits got blunter quicker if i drilled through and the bit hit the other side of the tube. 30 holes isnt too bad really.
Sharpening by hand is easy if you know how. These sharpners you get arnt too bad.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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Avoneer
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| posted on 23/4/06 at 04:10 PM |
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I used 30+ HSS ones on my 1st chassis.
Go nice and slow and get some cheap HSS jobber bits.
Pat...
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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JohnN
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| posted on 23/4/06 at 04:24 PM |
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Cobalt drills, (8% cobalt content) last forever and can be re-sharpened without losing strength. I've drilled loads of holes in stainless box
section (=very hard metal) with just a few drills. My main problem is snapping them when drilling in awkward places.
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greggors84
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| posted on 23/4/06 at 05:07 PM |
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I got a box of HSS drill bits for less than one fancy bit, managed to do the whole chassis and have a few left over. I got my from my local bolt
stockist, but any decent tool place should sell them in bulk for cheap.
I really need to learn how to sharpen bits.
Chris
The Magnificent 7!
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RazMan
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| posted on 23/4/06 at 05:41 PM |
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Alex - I got through a box of cheapie drills doing my panels. Out of interest - gold plated titanium?? I can understand the titanium coating but what
good is plating with a really soft metal like gold?
Or am I just losing touch with technology?
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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graememk
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| posted on 23/4/06 at 05:55 PM |
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i broke 4 x 3.5mm bits today, didnt even have chance to let them go blunt.
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omega0684
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| posted on 23/4/06 at 05:56 PM |
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raz it says on the packet that the gold is part of a hardened alloy, not being a chemist (cuz im a biologist) i dont know how they make gold hard?
anyway the bit was a waste of money, im thinking that cheap bulk buy is probably the best way to go.
I love Pinto's, even if i did get mine from P&O!
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paulf
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| posted on 23/4/06 at 05:58 PM |
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The gold coating is titanium nitride, it used to only be used on higger quality drills but now seems to be used to sell cheap chinese imports.I bought
a box of ten 3.2 mm jobber drills and had more than enough to do the car, but do know how to sharpen them .The cheap drills can also be more difficult
to sharpen as the web is usually quite thick.
Paul.
quote:
Originally posted by RazMan
Alex - I got through a box of cheapie drills doing my panels. Out of interest - gold plated titanium?? I can understand the titanium coating but what
good is plating with a really soft metal like gold?
Or am I just losing touch with technology?
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Peteff
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| posted on 23/4/06 at 06:16 PM |
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I broke one so I sharpened the short bit left over and it did my panels and is still going strong. Get Dormer or similar HSS, they're not
expensive in small sizes and are far better quality. If you're drilling aluminium use some WD40 or paraffin for lubrication and if they need
sharpening do them at a shallower angle, they will last longer.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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rusty nuts
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| posted on 23/4/06 at 07:02 PM |
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Got a set of Cobolt drill bits made by Clark (as sold by Machine Mart) , Did all my chassis and loads of other jobs and has been abused by someone
that "borrowed" them , Still going strong , beats all the HSS bits I've ever used . Highly recommended! If you don't want to
spend £40 or £50 on a set then buy a box of dormer bits for the size you need for not a lot of dosh
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amalyos
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| posted on 23/4/06 at 07:08 PM |
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Lubrication... Thats what you need.
Try it, it will make your bits last longer, if your desperate, a bit of spit works wonders.
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Cousin Cleotis
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| posted on 23/4/06 at 07:16 PM |
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dormer cobalt HSS drill bits, cutting oil and the right drill speed.
Paul
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bebot
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| posted on 23/4/06 at 08:20 PM |
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Obviously the chassis is mild steel, but are the side panels in stainless?
If so, there's your problem, stainless is a bugger to drill, if you let the drill go just slightly blunt then the stainless heats up and goes
extra tough, and then you're drill bit goes red and disappears!!!
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