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How to make a bobbin replacement cover

Everywhere in hm also quebec lost the bobbin cover to my machine and the co is out of business wanted to make ne cover myself if possible any ideas would be greatly accepted

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Yes, it is possible for an average homeowner to make a bobbin replacement cover, especially if it is an older vintage sewing machine, like a Singer 66, 15, 185J, 201 or a vintage HA Japanese machine.
Supplies Needed: 1. Paper, 2. Cardboard (Cereal-box is fine). 3. Masking Tape, 4. Pencil and/or Felt Marker, 5. Qty 1 Metal Cover Plate for a 4x4" Square Electrical Outlet Box (often used as a Junction Box), bought at a hardware store or from a junk pile. 6. Small metal fasteners (screws, rivets, pop-rivets or just small pieces of wire [ copper, aluminum or steel] that can be peened into a rivet). 7. Emery Cloth/Sand-Paper (fine grit for metal is best, but ordinary sand paper will also work. 8. Piece of flat spring metal, off or something else, or cut from a metal sewer drain cleaner flat-rod). If you cannot find this, tough plastic may do, or even a few really strong rare-earth magnets.
Tools Needed: 1. Scissors, 2. Etching Tool (almost any hardened piece of metal will do, like a Drywall Screw, sharpened Flat-Masonry Nail, or a hardened Flooring Nail. 3. Hack Saw (with fine-sharp metal-cutting blade). 4. Flat-Metal File (s). 5. Drill Bits (for metal) of the appropriate size (if needed). 6. Hand Drill ( manual or electric).
Nice to Have Tools (optional): 1. Bench Grinder with fine grit cutting wheel. 2. Rotary Abrasive Saw, or 3. Electric Saw (Reciprocating / "saber", Mini-Circular, or Vibrating Tool with metal-cutting blade). 4. Drill Press with appropriate Drill Bits. 5. Vice or Clamps (C-Clamp or Wood-working Clamp will do) 6. Power Buffer or Polisher.
Pattern-Making Process: Make a Paper Model then Cardboard Prototype : 1. Make a paper cut-out with scissors, that about fits (correct it with tape, then re-cut to get it right). 2. Redo it with harder card stock/card board (like from a cereal box), and test and redo it till you have a perfect fit.
Fabrication: The metal, sink-plated square electrical junction-box cover is just about the perfect thickness as the original bobbin cover plate, and is relatively easy to work with regular metal tools. 1. Transfer cardboard pattern onto the electrical cover plate with a Marker, then etch the lines, where you will be cutting the metal, with your etching tool or screw-nail. 2. Cover the Front and Back of the metal plate with Masking Tape, so the part does not get scratched and gouged in processing. This is soft metal, and is extremely susceptible to scratched that you will never be able to remove later. 3. Clamp or Brace the metal plate and Saw the two or three cuts needed to get the right sized rough-cut metal blank; allow enough tolerance, depending on your level of precision, so you can fine tune it to the exact size with out ending up too small. 4. File the edges square, or to fit your sewing machine, being especially careful not to cut your fingers on the sharp metal edges. 5. Fit the part on your machine, fine honing with file and emery/sand paper until it fits perfectly. 6. Decide on how you will keep the cover in place, either a spring retainer on the underside of the plate or some other method . A simple thin leaf spring should do, not too flimsy nor too ridged. You may be able to figure something out from a large office paper clamp. I used a small piece of flat spring wire that was used to make a spring-coil drain cleaning spool; drilled two small holes, with a matching pair on the metal plate, then riveted it in place. The commercial products use tiny round-head metal screw bolts, set into a tiny threaded holes. If you do this, then you will need the tiny screws and a tiny thread cutting "tap" tool. If this Spring retainer is too difficult for you, AND your sewing machine is made of Caste-Iron, then you are probably home free, just slap a few super-strong "rare-earth" magnets onto the plate, and it should magnetize the plate enough so it clamps solidly to the machine, and stays in place. 7. After basic fabrication, custom fitting and breaking the sharp edges off with a file and very fine emery paper, polishing the metal is in order upon removing the Masking Tape. 8. You may want a small divot in the metal to be able to easily pull the cove open with your finger nail. A slight crescent cut will do, some bobbin covers have a small oval hole, but I think the small indentations work very well, as long as the spring tension on the cover is right.
It took me a few hours to make my first Bobbin Cover Plate, but I love sewing with my own hand-made cover plate, which I engraved with my name and date made, for future generations will know that I cared for this sewing machine. Wish you well, you will be proud when you finish.
--Amender (2016 FEB 20) .

Posted on Feb 20, 2016

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