Hi Susan, you could use Zephyr as a substitute for 100% merino. There are a couple of caveats though….. As I’m sure you are aware that the other 50% of Zephyr is Tussah Silk and that makes Zephyr more expensive than 100% Merino. The other caveat is - do you have enough Zephyr in your stash to weave your project? Jaggerspun - the company that has produced Zephyr for years - has stopped producing it and many/most yarn shops are either getting low on it or are out of stock. All we have is Mythical Pink…..

Did you mean to say Jaegerspun Sandra?

Yes, I did - Cheryl - thank you for spotting that! I've made the correction. 🙏

Alpaca/silk is quite fine and the recommended sett is higher than the sett we use for the Harrisville Shetland that we normally use. You could throw double picks of the alpaca/silk which would give you a sett closer to the Shetland which Jane uses. Because of the silk content in your yarn - make sure you cut off a sample and wash it to make sure it's fulling the way you want your final blanket to feel. Keep us posted on your special project.