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This is really a Hunt Model 18 Pencil Sharpener. It says 'Boston' on the front, but is manufactured by Hunt. There should be a sticker on the bottom that says Hunt Mfg Co., and MODEL 18, along with the UL mark and power requirements (115VAC - 2.0 AMPS - 60HZ) and the serial number.
It does not run backwards when assembled correctly.
It runs on 115 VAC, and if you were to reverse the wires to the motor it would still run the same way.
It is possible to assemble the armature into the motor backwards and then mount the motor flipped over backwards and then it will run in the other direction.
Without the armature in it, the motor is somewhat symmetrical and will fit together backwards, but when properly assembled the wires dress towards the back of the unit and make more difficult to assemble.
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How do you make working model of lightning conductor?
-- Carefully remove the 'lead' from a wooden pencil that has been sharpened to a very fine point. You will use this piece of 'lead' as the 'lightning rod' in your working model of a lightning-protection system. -- You need a source of very high voltage. This is nothing to play around with, so I will give no instructions here. You'll have to look elsewhere for advice. And when you get it, hold onto the person who shows you where to get a high-voltage source. You'll need his supervision for every step, from there on. -- You'll construct a circuit consisting of the high-voltage source, a large, blunt conductor connected to one side of it, and your sharp pencil-lead connected to the other side. There is no connection between the large, blunt conductor and the pencil-lead. When the blunt conductor is moved or waved anywhere in the neighborhood of the pointy pencil-lead, a long spark will jump from somewhere on the body of the blunt conductor to the tip of the pointy pencil-lead. -- The large blunt conductor is the working model of a charged thundercloud. -- The pointed pencil-lead is the working model of a lightning rod. -- The long spark is a working model of a lightning discharge. -- The 'snap' or 'crackle' you hear is a working model of a thunder-clap. You can't do it from the instructions I've given here. That's intentional. You need to do this with the help and under the supervision of somebody who has done it before. Otherwise, there's a very good chance that you'll hurt yourself or hurt somebody else. Lightning hurts, even if it's only a working model.
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Ebay search Boston Model 17 Pencil Sharpener Gear (Lrg) $12.50 Worth it ?
How to Purchase gear for a Hunt Mfg Pencil sharpener Model 18?
You can purchase a gear for a Hunt Mfg pencil sharpener, Model 18 online. Browse listings on eBay to find the exact part you need.
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I also had a broken gear on my Hunt/Boston electric pencil sharpener and after extensive searching I finally tracked down someone on e-bay who makes them in a small quantity for both the model 17 and 18. He just posted more of the gears on e-bay as of 1/11/13 if anyone is interested. His seller id is valens61
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There is a seller on e-bay who manufactures the gears for the models 17, 18 and 19 in small quantities. He just posted more of them on e-bay as of 1/11/13 and his seller name is valens61. The cost is $12.50 with free shipping.
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While the real choice of best sharpener will depend on what type of knife you are using the sharpener on, several online reviews suggest that the Chef's Choice 130 model of sharpener is an excellent sharpener for general or all around use.
