This is the in conclusion affair nosotros postulate to larn earlier moving on to the machine! Congrats if you’ve made it this far.
After nosotros eventually solder novel wires onto the motor leads, within the motor housing we’ll postulate to necktie those novel wires into what’s called an underwriter’s knot earlier nosotros force the wires out through the housing.
An underwriter’s knot provides strain relief, thus that if nosotros tug as well as trace on the wiring piece we’re installing the motor, it volition non house whatsoever stress on the motor leads where they bring together alongside the motor’s champaign core. (The knot volition merely grab on the within of the housing.) This is real important, because if you lot pause that connector at the champaign core, your potted motor thus becomes a potted paperweight.
We’ll practise exterior of the machine to live on certain nosotros tin acquire the knot right. Ready?
Let’s commencement past times cutting 2 eight-inch lengths of wire. Use a dissimilar colouring for each to avoid driving yourself nuts.
Photographs volition best illustrate what to create next:
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| Step 1 |
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| Step 1 detail: Ensure you've crossed OVER the wires |
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| Step 2: Ensure the other side crosses UNDER the wires |
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| Step 3: Through the loop on the left (from front end to back) |
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| Step 4: Other wire goes through the loop on the correct (from dorsum to front) |
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| Step four detail: Double-check that the appropriate sides are over or nether each other, every bit shown inwards the blueish circles. |
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| Same photograph every bit above, but without the distracting blueish circles. |
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| Step 5: Don't tighten all the way; acquire inwards exactly tight plenty that the wires don't sideslip out of the loops. |
We're keeping it unloosen for a reason. Because here's the existent trace a fast 1 on to getting this correct in 1 trial we're doing this within the actual motor: We convey to larn how to move the knot downwards. This is easiest to create past times keeping the knot loose, thus moving it downwards every bit nosotros tighten.
Here's the unloosen knot. I've house it exaggeratingly high up, nigh 3 inches from the bottom of the wires, for the purposes of illustration:
As you lot start to tighten it, motion the knot downwards. You volition convey to create a picayune flake at a time, working on each side inwards turn. Don't tighten also much, maintain it unloosen plenty that you lot tin cash inwards one's chips on to motion the knot to where you lot desire it.
There's no agency for me to illustrate the knot-moving procedure inwards photos or video; I tried as well as my fingers block the sentiment of the wires. It's exactly something you lot convey to monkey with, as well as you'll eventually "get it."
Here you lot tin come across we've got the knot all the agency downwards close the bottom.
We ultimately desire to live on able to acquire it thus there's entirely 1/2", or peradventure 3/4", of wiring left underneath the knot.
Then nosotros tin tighten it. You don't convey to acquire it super-tight for now.
You may wonder why we're doing it this way. It's because there's non much room in 1 trial we're within the actual motor, as well as existence able to motion the knot volition examine useful to ensure everything fits within the housing. Don't worry if you lot don't empathize what I hateful past times this, it volition all cash inwards one's chips clear in 1 trial we're genuinely doing it.
Next we'll finally acquire our hands on the actual sewing machine. But don’t acquire also excited yet, because chances are every bit nosotros start disassembling the motor we’re going to convey a ton of cleaning to create every bit nosotros go.
Go on to Part 7: Disconnecting the Motor Leads
