Building A Better Spool

I’ve tried a lot of different Tenkara line spools, some are light, some are cheap, and some are rich in features. Each brings its own pros and cons to the table. And the fact that there’s so many types of spools out there shows that one size doesn’t fit all. However, I still think there’s room do better, because I have never seen a spool the winds itself.

Let me explain myself a little. Since day one on Tenkara I’ve been bothered by how tedious it is to change lines. Slowly and carefully winding line around the spool is by far my least favorite part of the system. Some spools make this easier than others, but none can actually do it for you. At first this was just a funny idea, but it stuck with me. Every time I wound up a line, I found myself wondering how it might work. Eventually, an idea coalesced into a design.

Over a year of development later and I’m nearly done. Take a look:

You drop the spool into a pocket-sized winding tool. Internal gears multiply your speed so a whole line can be wound up in seconds.

I suspect this design will make winding line easier for those with unsteady hands or coordination issues, but I haven’t tested this theory.

While the winding tool isn’t quite done yet, the spools are. This is their final form factor.

They work with every kind of line and come in fun colors.

The spools have a slim profile and magnetically clip together:

Depending on how much time I can find, I hope to have the spools and winding tool on the market sometime in April.

Anyone have any thoughts? I’ve largely been working on this alone and would love to get some other perspectives. Open to color requests too.

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Awesome, I like the design and would buy one. Perfect!

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I love the add of the magnet to make them stackable. The winder is a cool little widget. Very impressive and out of the box.

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I like it and am interested in purchasing

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Cool system Guenther!

After winding my line, I like to take my arbor (lillian slip) knot, place it the spool and pull the tag end that has a figure 8 “handle” knot at the end to tighten it around the spool to keep the line from unravelling. Also the arbor knot cannot collapse into itself; making it a nice neat package. I simply pull the tag end again to loosen the knot when I want to unwind the line. It could be easier if there was a specific notch or hook somewhere on the spool to securely hold the arbor knot.

Does your spool and winder system provide a way to secure the arbor knot?

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Very cool! I’ve never been bothered by winding up my line with a standard spool, but this is really creative. My favorite part is actually the magnets haha.

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These are fantastic. The retract system kind of reminds me of early 2000s sony earbuds with the winder case.

Excited to see this develop.

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@Brian_Miller I do something similar, that is, closing the arbor knot around the spool at the end.

Back to your question:

Does your spool and winder system provide a way to secure the arbor knot?

Yes! You can secure the end of any line, regardless of what knot you use. The groves on the top are undercut, so that when you pull line into them it gets locked between the coiled line and spool.

Here’s what that looks like with level line.

The spool is tapered so that the line always spools up around the undercuts first, providing the best locking action.

Is this what you were asking about?

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@tallkara Woah, that’s eerily similar. It’s cool to have my work compared to something made my pros.

The winding mechanism was somewhat inspired by old rotary phones, and the shape was inspired by river stones.

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Yup :slightly_smiling_face:
Let us know when it’s in the store.

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Snap that’s cool. I’m interested in purchasing also

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Nice work Gunther, I like the concept and design. It kinda reminds me of an old school carpenters chalk line but without the little flip out winding arm.

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Update:
Development is complete and production has just started. It’ll be available on my store this Friday (now postponed to Saturday).

I’ll share more details over the coming week.

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For the last month or so I’ve been hard at work getting this product developed. Thank you all for the encouraging feedback, it motivated me to give this my best.

Here’s the winding puck in a feature complete state. The overall form is the same, but it’s the details that took time. There’s now a groove for the line to feed through, a grippy texture on the outside, an improved gearbox, and a divot for prying out spools.


The functionality came out better than I could have hoped. It winds line like a dream. Here’s a video of it on 13 ft of floating line:

Because it has slots on both sides, the same puck works for right-hand and left-hand retrieve.

Despite thinking I was done developing the spool, I ended up having a few more ideas to throw at it. Here’s how it looks now (not final)


Here’s how the black and gold came out:

Other colors are still a WIP.

I’m really excited for people to get their hands on this, so figuring out pricing was hard. For now, I’m going to do 2 spools for $12, and a spool+puck for $24. I’m using top quality plastic resin, in specialty colors, made in the USA . It’s expensive. If I can get a retail partner, then I could take advantage of economies of scale and develop a reduced cost version. However, this would be a different product, made with bulk raw materials from China, and 3D printed by a contracted manufacturer. Even if the sales are good, this wouldn’t be any time soon.

So where can I buy this? On my store starting tomorrow evening. I had originally planned for tonight, but I just thought of one more feature to add. Since I want this to be the best I can make it, I’m pushing back the release to tomorrow evening (Saturday).

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This is live:
Line Winder: https://teaandtroutdotcom.etsy.com/listing/4307081171
Spools: https://teaandtroutdotcom.etsy.com/listing/4307077185

This has spent a long time in my hands, and now it can be in yours. I’m looking forward to hearing how this works out for everyone.

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This looks like a fantastic kit!

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