So it seems that Monstrous Spider Silk glands can now be used as a base material in tailoring garments.
They act as the equivalent of... yarn balls (wool)? O.o
Should these not be a substitute for bolts of silk?
Not sure it that is a bug or intentional, but figured it should be mentioned.
To test: use six silk glands and a garment pattern, you will get a wool garment out of it.