I have purchased a bunch of size B and D threads, large spools. Can I use the B thread for like Bass Rods? What can the D size be used for?
Thanks,
Dave

D thread CAN be used to wrap any guide; most prefer A for looks, though. But it CAN be used just fine.

Putter
Williston, ND

What about the B thread for Bass Casting or Spinning rods?
Dave

They'll be just fine for any rod, Dave. Just a tad larger than A; B is a bit of an odd size and not many threads are available in this sizing. It'll be just fine, though.

I know Doc uses B in a lot of his weaves.

Putter
Williston, ND

TITLE: "Gudebrod Thread Table: Strength & Weight of Guide Wraps for Size 2/0 - E" [www.rodbuilding.org]
Table of Wrap Strength & Wrap Weight per 1 cm Width of Guide Wrap around a 1 cm circumference section of rod blank (OD = 3.18 mm) for selected popular Styles & Sizes of Gudebrod Rod-Building Thread. (Calculated values, not direct "in-situ" measurements. -Cliff Hall+++) KEYWORDS: GUDEBROD; THREAD; Strength; Weight

OK...Need a little help here from someone not so mathmatically challenged as I am.

The conversion equation for diameter in mm to diameter in inches

mm/25.4 Is that right?

Thanks Cliff!

Derek L. McMaster
Rohnert Park, CA

Born to Fish, FORCED to Work

Derek -Yes sir, that is correct-o-mundo. There are EXACTLY
25.400 mm per 1.0000 inch. That is not rounded off - it is exactly true.

( ___ mm / 25.400 ) = ___ inches (decimal notation 0.000)
( ___ inches (decimal notation 0.000) x 25.400 ) = ___ mm

Sizing reel seats is the most common need for this (mm <--> inches) conversion. In that Gudebrod Thread Table (Wrap Strength and Weight), I specified the values assuming a wrap width of 1 centimeter (10 millimeter = ~ 3 / 8ths inch). So, for example,

Regular Nylon size A thread has a diameter of 0.175 mm --> 57 turns per cm
Regular Nylon size D thread has a diameter of 0.260 mm --> 38 turns per cm

Your # turns per cm depends on how tightly you pack it. So, now you can see that a simple multiplication of the (# turns per cm) by the tensile strength of that size thread is how to calculate the comparison of (1cm of size A band-width) verses (1cm of size D band-width) wraps. Size A has a theoretical holding power of ~ 150#, and size D has ~ 280#. EITHER ONE is several times the load of 30-50#, directly on the guide ring, which starts severely deforming the guide frame, even before the guide foot slides out from under the thread, or before the thread would start to snap. The load on a single guide is never that much ... -Cliff Hall+++

Thank you Cliff.

My Matrix is ALMOST complete.

Need the diameter in inches if

Gudebrod Size B (rare I know but it is still out there and

35wt poly, rayon, nylon (rare)
30wt mostly Rayon
15wt Mostly cotton, some poly and metallics
12wt Mostly cotton, some poly and metallics

I actually found a site out there that advertises 12wt metallics and I would LOVE to know thw diameter

Also

the thread exchange is under new mgmt and have a wider range of product now.

When a thread diameter is not available (and I don't have the Threads that Derek asked about), a test wrap will tell you the # turns per cm or inch, as you wish. If you can count by sight or a probe The blank diameter is essentially irrelevant. In fact, wrapping a 1 cm band around a pencil or pen, which has one unique side, may make counting the # of turns much easier. -Cliff Hall+++