I have been using a spongy 2 sided tape with good success for bobbins without holes. for resistance calculation - what function are you using? Are you adding the 2 radii to the rectangle?
Not sure yet. However, it will cost more as the CNC approach is much more sophisticated and requires a manual for assembly and another for use. There's also a software component as well.
I eagerly await the new plans. I purchased the current plans but have not had a chance to build it yet. In the meantime, I have been experimenting with different winding setups of my own and I too have a box full of reject/experimental pickups. The biggest challenge I am working on now is a way to hold the bobbin that is easy to mount/dismount and allows for consistency. Good work Chris, thanks for posting.
That would definitely be an "attract mode" for a guitar show. Just let it run on slow speed (so you don't have to attend it so often) it would definitely sell some pickups on that day.
Please don't mind someone adding a comment. Since resistance is a function of the length of the wire, can't you measure how much wire is consumed in the winding and that tells you the resistance? Of course, that adds a new problem of measuring the length of wire passing through the winder.
How about this well let me first say how much I appreciate all the knowledge you share okay your winder let's say like you made that template that held a particular bobbin style what if you 3D printed a receiver like that for each of the different bobbin and styles that you have or will use. And then had just a couple of locating pegs to keep the bobbin from slipping on the mounting plate that would eliminate sticky tape any type of gel or material other than a solid surface that would also eliminate any movement of the bobbin I'm sure you wouldn't have to 3D print them but you would find someone I'm sure that would give your readers in their plans when they purchase them the codes in order to have them make their own receivers hopefully this is helpful continue the good work
This is such a cool idea. Once the plans are ready I will definitely be purchasing them. I really hope we can get to a point where everyone is sharing their pickup plans. With this done with cnc you could really make something repeatable and easily shareable. I’ve also been contemplating trying to make a Pcm board pickup. I’ve seen a couple people start it online, but would be really cool as pvc because I could cut it on my cnc and also share great pickup sounds with others. I love the “Maker Movement”
I got real busy and quit watching about 4 months ago. You've been putting out some great videos in that time. I will mos def be building your winder. If you are finished in time with the software and updated design cool. If not I'll use your current design and then update later. Thanks for all your efforts
Cool project/experiment. I haven't seen the other pickup videos you made. It could be useful down the line to include parameters for Magnet types, Gauss, etc., so pickups could be dialed in at a Boutique level of specificity.
6:56 ever have one fly off? I did once when I first started making pickups. I always wonder when it will happen again. They seem to be stuck pretty good. I use glue and tape
@@HighlineGuitars yeah they do get a little heavy. I have a clanping system on my machine, I still use tape and glue lol. Its just so much easier. I would never use double sided tape. I never even tried double sided tape. I dont know of any that I would trust to stay stuck. That idea makes me real nervous. The only ones thay really ever worry me worry are tele bobbins.
Hi Chris, I bought the package. Is it possible to have the software in mm instead of in inch. It’s more usable in Europe. Keep up the good work. Best regards, Marc
The resistance calculation might be best approached as a machine learning issue. The scatter problem may not be solved by testing equations.But, every finished bobbin is data. If a bunch of users of your plans record variables and measure outcomes. Enough data will predict the correct settings for the desired outcome. Lofty idea, but it's possible.
Regarding the math for calculating the resistance - think of it this way: For a typical Strat single coil bobbin can be divided into two half circles and a rectangle. Or, you have a circle and a recrangle. The length of the recrangle is constant, the circumference of the circle is going to increase as more wire is wound onto the bobbin. When you compensate for the fill factor, you take the length of the rectangle * 2 + circumference of circle(L), where L represents the number of layers on the bobbin. You will have to calculate the circumference of the circle for each layer. You need to know the initial diameter of the round part of the bobbin and then increase it with the diameter of the coil wire for each layer. This will only be an approximation of course, but maybe it will bring the result closer to reality.
I'm on mobile now, so I cannot write formulas, but look into what an arithmetic series is. If you take the formula for calculating the sum of the first N elements, and change it a bit to include the length of the recnangle's sides, you wil end up with a quadratic equation that will give you the number of N layers you need to get exactly R resistance. If the equation has two solutions then one will most likely be negative, so you can ignore that.
I would imagone the simplest thing to do would create a number of pickups with a given number of rotations for a specific winding type and test to see if you can get a consistent resistance. Eithe that or brush up on you calculus.
Ohm calculator: Wouldn't it be the same using the circumference for a bobbin and the oblong pickup bobbin? Isn't it just circumference X bobbin height. Because the OHM cal is a very cool software feature. I'd also guess that the quality/consistency of the wire would have a big effect too. Thanks as always for the great information, enlightening.
