Mandrel Bench — the bloghttps://cosnfx.store/mandrel/news/Notes + guides from Mandrel Bench — the craft behind the benchen Mandrel Bench opens · Mandrel Benchhttps://cosnfx.store/mandrel/news/welcome.htmlhttps://cosnfx.store/mandrel/news/welcome.htmlSun, 08 Nov 2026 23:38:59 GMTWelcome to the knot bench, what is free here, and what the app adds. The 4.6× rule — strand width for a plaited whiphttps://cosnfx.store/mandrel/news/whip-taper.htmlhttps://cosnfx.store/mandrel/news/whip-taper.htmlSun, 01 Nov 2026 00:00:00 GMTOver a core of diameter D, total strand width ≈ 4.6 × D at the 43° plait angle; each strand is that over the count — with the thin-core caveat and the 1.5× circumference alternative. How much thread — the number that never runs shorthttps://cosnfx.store/mandrel/news/thread-length.htmlhttps://cosnfx.store/mandrel/news/thread-length.htmlSun, 01 Nov 2026 00:00:00 GMTSPI to spacing on the real pricking irons, the thread at spacing ÷ 6, leather in oz to mm — and the per-inch thread formula: 2 + 2 × thickness × SPI. Bights and leads — counting a Turk's headhttps://cosnfx.store/mandrel/news/bights-and-leads.htmlhttps://cosnfx.store/mandrel/news/bights-and-leads.htmlSun, 01 Nov 2026 00:00:00 GMTBights × leads: the gcd answers the cords, (leads−1)×bights answers the crossings, and the coding families settle how it weaves. Which pricking iron to buyhttps://cosnfx.store/mandrel/news/choose-iron.htmlhttps://cosnfx.store/mandrel/news/choose-iron.htmlSun, 01 Nov 2026 00:00:00 GMTThe first pricking iron chosen by spacing and project: the SPI-to-mm table, the tooth layouts, and the thread pairing.