How do I work out how much ribbon I need to go round a full circle skirt?

[KatyMac]

It's floor length for my DD (about 5ft2)

It isn't here or I'd measure it

Damn I need to buy it tonight

It's that Pi thing innit?

Just seen godets comment.... that makes Pi unusable as we don't know depth of said godets.

Buy yards and yards. Is it very expensive?

sorry.

10 should be plenty, still, surely?

The skirt before alteration was about 1.5m - I am assuming we will be adding at least the same amount of hem which makes 3m

Blimey 10 will be loads!!

I am daft aren't i?

Mind you the georgette was very cheap at £2.65 a metre

Would you iron the ribbon in two and just sew one line of stitches, do you think?

You need to use bias binding not straight ribbon to go around a circular hem. Bias binding satin would look pretty or you could buy a special little gadget and make your own. gadget here

I know I should

But I've managed before to 'ease' it round with an occasional mini pleat

didn't know they made it; too lazy to make it

Can you bind it with some of the georgette or other fabric cut into bias strips? that's what I did with my wedding dress which was a circle skirt about 100 years ago

Too lazy

Thanks for the idea

it will look lovely regardless - is it for dancing?

Yes - big comp in April

I'd better get sewing

Damn

Fiddly dum, fiddly dee dee
The ring round the moon is pi x D
But if a hole is to be repaired
The one to use is pi x r squared

See I knew maths would come in useful, eventually!

Is this a fully circular skirt? I suspect it isn't unless it is hooped, however if it is, let's say skirt length is half her height... so we would take 62" (length on either side) + 24" (hole for the waist) = 86" (diameter) x pi (3.141) = 270" /12 = 22' 5"

You can adjust the length and waist nos as necessary.

DD's partners mum thinks we should do hem in georgette

"we"?

Is she volunteering?

She's helping, it's a big job

Sent you a PM Stealth.

I think it looks better without the ribbon on the hem

Oops. So is currently on or off?

Off; I haven't started it yet

It looks amazing; I'll get some photos of it tomorrow

(don't suppose you know anything about swansdown/maribou??

Not a thing, sorry

Me neither & it needs washing

A quick google suggests hand wash
(Or hand wash cycle), blowdry, and hope for the best

Shall I give it a go?

Maybe?

it depends - if it is so grubby that it is no use unless it is washed, then you don't really have much to lose by trying - and unless anyone has come up with any better ideas, I would go for the gentlest machine cycle if it were me because I know how rough I would be if I tried to hand wash it. Feathers are, on the whole, tougher than we give them credit for, I think - I boil wash feather pillows and duvets quite regularly.

I think I'll ask DH to do it; he is so much better than me

Good idea and then it will be his fault if it all goes horribly wrong