Box Cover without Hinges
Box Cover Using Pins Instead of Hinges to Keep It in Place
Two ordinary boxes may be fitted together as one without using hinges, if nails or screws are inserted at points along the edges so that they will slip into holes bored at corresponding points in the edges of the other box. The nail heads or screw heads should be filed off or cut off after being placed in position.
¶All metal patterns should be thoroughly cleaned with a stiff brush having plenty of beeswax on it and dipped in powdered plumbago. Brush the pattern well, and it will draw easily and make a smooth casting.
Sanitary Holder for Thread and Dental Floss
A simple and convenient method of protecting a spool of thread, or dental floss, from collecting dirt and germs is shown in the illustration. A small glass jar, with a metal screw top, is procured, of such a size that it will easily accommodate the spool of thread desired to protect, with at least ¹⁄₈ in. clearance all around the edge of the spool. Procure a short piece of stiff wire, not more than ¹⁄₁₆ in. in diameter, and make a frame similar in form to the one shown. The center portion of this frame should be just a little longer than the spool, so that a small wood key may be placed through the eye formed in the wire and thus hold the spool firmly on the frame. The outside portions of the frame should be such a distance apart that they will rest against the sides of the jar and of such a length that they will reach from the bottom to the top of the jar when the lid is screwed down tightly. If these dimensions are observed, the spool and frame will remain in a fixed position in the jar.
A small opening, just a little larger than the thread, is made in the center of the lid, through which the thread is to pass. The edges of this opening are smoothed off so that they will not cut the thread when it is being drawn out. A small cutter may be made by forming a V-shaped opening in the lid, through which the thread is to pass. The edges of the V-shaped piece are sharpened to serve as a cutting edge. The end of the thread will be held under the V-shaped piece after it is cut, thus preventing it from falling back into the jar.
¶The word “diameter” when applied to gears is always understood to mean the pitch diameter.