tag:blogger.com,1999:blog-21068675.post4315446789252192891..comments2024-03-11T11:38:56.028-07:00Comments on A Fisherman Knits: WPIAaronhttp://www.blogger.com/profile/05150805906414546377noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-21068675.post-77449288354551306982011-11-14T13:16:51.104-08:002011-11-14T13:16:51.104-08:00It is like a Japanese subway. How many people can ...It is like a Japanese subway. How many people can fit in a subway car? With packers, they can get more commuters on the train, and yet nobody is so deformed that they end up in the hospital. <br /><br />That is what ptr means. Full body contact from head to toe. Without ptr, you will not see that kind of full body contact. Unless there is full body contact, the packers can likely pack more people into the car, ie the car is not full. As long as you let the passengers decide how much space there is between people, nobody knows how many people are on board the train. Once everybody is packed on in full contact with each other, then we have a good estimate of how many passengers are on board. <br /><br />Until you have packed your gap to refusal, you do not know how many more warps of yarn will fit into the gap.<br /><br />At ptr we have a uniform fiber density across the gap at a thickness of 1/wpi. That tells us the cross-section of the yarn, in a simple and repeatable way. From the cross section of the yarn, we can calculate its grist.Aaronhttps://www.blogger.com/profile/05150805906414546377noreply@blogger.comtag:blogger.com,1999:blog-21068675.post-55716960609439566602011-11-11T13:36:03.113-08:002011-11-11T13:36:03.113-08:00You say "pack to refusal" doesn't de...You say "pack to refusal" doesn't deform the yarn. But on the websites you linked to, their descriptions of the wrapping process are identical to your description. If ptr gets twice as many wraps per inch as their method, then it must deform the yarn. There is no other explanation for the difference.=Tamarnoreply@blogger.com