Any question answered...

.......... if you want 10mm wide strips of pizza ;-)

Single or double bladed.

Thanks- yeah think a tenner or so at the LBS might be the best course of action here.

Not unless you're a real heavy-handed muppet. I file the tops of carbon steerer tubes and they're fine. Just use a #2 rather than a bastard file.

You cut the steerer freehand and then file the wonky top flat?

That's what I cautioned against.

I cut my steerer freehand and then didn't file the absolutely perfect flat top because I'm a fucking champ

"Chump" Phil.

It's "chump".

I yell at my steerer until enough of it leaves to be the right length.

You know what, I knew somebody would say that but I didn't expect it from you. I'm disappointed

Freehand with a piece of paper wrapped around the steerer to act as a visual cutting guide, then file it to get it exactly flat and smooth, and put a small bevel on the outside. Never had any problems with fibre delamination.

Freehand with a piece of paper wrapped around the steerer...

Coming from a man with a lathe in his dining room (or is that a dining room in his workshop), I expected more.

A lot more.

I've got a saw guide. I don't like it. The gap is too wide and you end up with a wonky cut. And carbon fibre definitely isn't going to enjoy being turned in a lathe. Bottom line is that freehand is quick and it works. If I was deeply pretentious (rather than just quite pretentious) I could say 'All this by hand' a la Richard Sachs.

I glance at them from across the room, by the time my eyebrow is half raised they have perfectly cut themselves to size and have greased themselves ready for insertion. I have to clean that off and install them properly but I can't blame them for getting overexcited.

If you put an appropriately-sized rod inside the steerer then clamp on your old-stem-cutting guide, would the compression be enough to limit delamination while filing?

You could try that, but the pro tip is to freeze the part into a block of ice and then do all your cutting using liquid nitrogen as your coolant. And yes, those are actual strategies for machining composites.

I have a Shimano Dynamo hubbed wheel, rim (MA2) looks almost unused.
Hub is super stiff and the connection looks a bit bolloxed but Skully had a look and thought it'd be fixable.
Where should I take it in London?

Does Colossi not have a homepage anymore?

Nevermind found it...

2nding genuinely useful knowledge there. Any idea why it warns against using it on Aluminium?

Any idea why it warns against using it on Aluminium?

Aluminium clogs abrasives.

Just picked up some bars from on here which I assumed had tape residue on. Turns out they’re actually chipped to fuck around the bend on both sides. This is on the top, where your hands would rest above the hoods. Some of them are a little deep.
Should I be asking for my money back or are they definitely going to be strong enough to support my slender 65kg smashing into London pot holes on the hoods?

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At first I was afraid, I was petrified but then I thought to myself that many alloy bars are drilled for cables anyway so now I’m not sure

I wouldn't trust them at all

Is the answer I feared

I've never seen anything like that. The question I'm asking myself is, "how the fuck did they get into that state?"