[modeleng] Re: Diamond Core Drills
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Sat, 5 Apr 2008 19:42:40 -0700 (PDT)
Is it perchance a left-handed bolt?
Al
--- clif.gwr@xxxxxxxxxxxx wrote:
> Hi All,
> I have a problem with a bolt on my car.
>
> It was a Torx type star headed 10mm bolt which is
> supposed to be tightened to a torque of 15 ft.lbs
> and is one of three holding the pulley onto the
> power steering pump,.
> When I tried to undo it the torx tool simply ripped
> the stars off leaving a round head. Just to make it
> worse it is typically in a awkward place to get too
> and part of the design of these beasts is that they
> flare out towards the base so forming their own
> washer. So I am now left with a cone shaped disaster
> zone.
> Using a Dremel type slitting disc I formed a slot in
> the remaining head and so far using screw driver
> blades that fit into a 1/4" drive socket have
> sheared off four blades. I even tried heating it up
> using a Micro blowlamp.
>
> From this it seems that it does not look as though
> it is ever going to shift and so have hatched
> another plan.
>
> I intend to use a Diamond Core drill, as used for
> drilling holes in very hard marble tiles etc. I have
> used these when installing bathrooms.
>
> What I hope to do is place the core drill over the
> pointed head of the bolt and grind my way down to
> the pully face hopefully turning the bolt head into
> a stud. Thus I hope at least to be able get the
> pulley off.
>
> I was hoping to put a thread on the resulting stud
> and then put a nut onto it but there will not be
> sufficient clearance to get a die down it. The
> pulley therefore is going to have just be held on by
> the remaining two bolts with the stud just taking
> some of the drive load.
>
> The Question is, has anybody any experiance with
> using Diamond Core Drills to cut steel?
>
> Regards
>
> Clif
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