On 24 Jun 2005, at 04:27, Kathy wrote:
Is there a general rule of thumb for enlarging or reducing a pattern
if you wish to use the /Threads for/ /Lace/ book and use a different
size thread than the pattern recommends? For example, the pattern
calls for Copley Marshall 80/2 (48 wraps/cm)and I want to try to use
Aurifil Mako 40wt (36 wraps/cm). It's a pretty big jump in thread
size, and I don't have any idea what percentage to start to enlarge
the pattern (some more of the patterns in /Milanese Lace/ by Read &
Kincaid). Is there a point that you can enlarge or reduce the pattern
too much?
The info is all on my website:
http://paternoster.orpheusweb.co.uk/lace/threadsize/threadsize.html or
http://tinyurl.com/c9dzg
Scroll down to the table.
If you read the blurb before the table you'll see that I reckon that
Milanese works best with 8 or 9 wraps of thread between pinholes, so go
to, say, the second column, headed 9 and find the nearest to 48
wraps/cm. It actually falls between two stages, but would equate to
1.7mm between pinholes. Now find 36 wraps/cm in the same column and
read back to the left - in this case it's 2.5mm.
That means that you want to enlarge your pattern by 2.5 / 1.7 = 1.47
That's 1 --> 1.47 lengthways AND 1 --> 1.47 widthways.
On most photocopiers that will just be shown as 147% and will more than
double the area
1.47 x 1.47 = 216% increase in the area
( A3 paper is twice the size of A4. A4 --> A3 is 141%. 1.41 x 1.41 =
1.99)
If the pattern had recommended Aurifil Mako 40wt (36 wraps/cm) and you
wanted to use a finer (48 wraps/cm) thread you would *reduce* the
pattern by 1.7 / 2.5 = 0.68 - or 68%
As Tamara and Jacqui have said there's always a bit of leeway,
especially with braid laces, but the general principle should work
every time. According to the type of lace you're making decide how
many wraps of thread between pinholes you need and just use the
appropriate column and read back to the two left hand figures.
Theoretically you can enlarge as much as you like so long as the
pricking is in proportion to the thread - think back to the wire fence
that was discussed a few weeks ago. It's just personal taste as to
whether or not you like the larger scale.
BTW that info and chart will be in Ed 3, replacing the sample prickings
in Eds 1 & 2
Brenda
http://paternoster.orpheusweb.co.uk/
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