Thread Sizing between Manufacturers

I am currently planning to switch thread manufacturers because the DMC thread is harder for me to source (the reliability of sites like Herschners.ca is very disappointing) and because the colours offered by DMC are not being updated with new choices. The Lizbeth thread is very commonly praised by other tatters on their blogs, so I am trying it out.

The shocking part is that the sizes of Lizbeth and DMC threads are wildly different!

The higher the number, the thinner the thread, the smaller the finished tatting should be. But this only applies within the brand!

DMC8 Lizbeth10
DMC size 8 smaller than Lizbeth size 10

Doing completely the opposite to what I was expecting, Size 8 in DMC makes a much smaller snowflake than Size 10 in Lizbeth.

DMC12 Lizbeth20 Florence
DMC 12 smaller than Lizbeth size 20

I though size 20 would be much smaller than size 12, but it turns out it makes much bigger doilies.

DMC12 Lizbeth20
DMC size 12 smaller than Lizbeth size 20 closer view
DMC8 Lizbeth20
DMC size 8 compared to Lizbeth size 20

Even when comparing DMC size 8 to Lizbeth size 20 is a shock – they are close to the same!