Drilling 3/8" plate

[billm]

That seems like a rather crude method, I'd have thought it'd be better to pull it through by tightening up the wheel nut on some washers or other spacer?

I never thought of that, yes much better, thanks

 

[billm]

when I said elongated I meant elongated ! That's one of the new studs just to show the butchering job they did.

To be honest this is just a little project. If it works out, fine, if not I'll try to find new hubs

 

[Munroast]

Is that a brake drum? cast steel or Iron - what would you weld it with

 

[billm]

Is that a brake drum? cast steel or Iron - what would you weld it with

No its the hub, you can see the brake disc just behind it. It's been on the car unprotected for years so lots of surface rust. I presume it's mild steel ?

 

[Harry Bloomfield]

if the accuracy of the hole is critical, centre punch it first and start the hole with a stubby centre drill bit.

You can buy, sets of centre-punches, of various diameters, so you can put the centre-punch through an existing hole, to punch the exact hole centre in your material through the hole.

 

[Burnerman]

The hub could be malleable cast iron - quite a lot of free carbon. Just a guess though, and if that were the case I'd be inclined to either leave the holes or braze them up.
John

 

[Harry Bloomfield]

Yeah, I can't regrind drills. It is a skill that I lack. When a bit becomes blunt, I bin it, which admittedly is a waste.

In my teens, I became quite skilled at sharpening drills, but over the years I gradually lost that skill. I recently determined that I should try to resurrect the skill I once had, after all - I had all I needed and more in my workshop. I tried several times, messed up lots, gave up, then kept trying. I'm back now, to making a fairly reasonable job of it.

 

[Burnerman]

I had one of these until someone relieved me of it:

Drill Bit Sharpener 80W (SMS2008)

It worked very well indeed - best of it's kind.
John

 

[Harry Bloomfield]

I had one of these until someone relieved me of it:

Drill Bit Sharpener 80W (SMS2008)

It worked very well indeed - best of it's kind.
John

I bought a cheapie, just to tackle the smaller bits, which I struggle with.. The instructions were not very clear, as to how to set the drill, so some guesswork involved. I found that sometimes it worked, other times not. I failed to work out why.

 

[carmanmemoranda]

I'm probably missing something here but.

It's quite possible to mark and punch and then drill holes as required . But accurately enough with a hand drill? The studs need to be precise fit, at the right angle.

It would cost very little to actually get this done properly. It's holding a wheel on the car at the end of the day.

Can you find new hubs, that might be the better choice anyway.

 

[Munroast]

You can buy, sets of centre-punches, of various diameters, so you can put the centre-punch through an existing hole, to punch the exact hole centre in your material through the hole.

I have access to a 3d printer - a while back I did a a job a little bit like the OP is doing, in that I had to marry up a plate to an existing body with M12 holes. I printed out little plugs with a hole in the centre just the dia of the punch - I got them spot on

we're also very fortunate to have one of these, an optical punch, just wonderful to punch accurately into fine cross hair markings

drilling holes accuratey is a far more difficult that folk imagine

 

[Harry Bloomfield]

I have access to a 3d printer - a while back I did a a job a little bit like the OP is doing, in that I had to marry up a plate to an existing body with M12 holes. I printed out little plugs with a hole in the centre just the dia of the punch - I got them spot on

Similar idea, except I have a set of multiple punches, of a variety of outer diameters. You just put the appropriate punch, in the hole, tap it, and you have the accurate centre marked, ready for drilling.

As you suggest, it's still very easy to go off-centre, despite the pop mark - which is where centre drill bits come in. I have a set of those too, invaluable for drilling accurately placed holes.

 

[opps]

I had one of these until someone relieved me of it:

Drill Bit Sharpener 80W (SMS2008)

It worked very well indeed - best of it's kind.
John

Having watched the product video, it looks straight forward. I may pick one up. Thanks.

 

[Old Salt]

What car?

 

[Tigercubrider]

How were the original studs located?
Is it possible to back out the shortened stub studs?