304 



Popular Science Monthly 



shop. Build it warm and provide for some 

 sort of a heating apparatus. Have plenty 

 of light and ventilation and make it a 

 pleasant place in which to work. Provide 

 enough room so that later on an emery 

 wheel, lathe, drill-press and other ma- 

 chinery for the farm may be installed as 

 well as a lighting plant. 



Ironing- Board that Becomes a Bench 

 and Step-Ladder 



AN ironing-board which can be adjusted 

 so that the operator may sit down to 

 iron, and which 

 may be convert- 

 ed into a bench 

 for the tubs, a 

 step-ladder, a 

 sewing-table, or 

 an invalid 's 

 table finds a use 

 in every house- 

 hold. The 

 board is made of 

 sound lumber 



strong enough for all the purposes 

 for which it is intended. When 

 not in use it folds up so that it can 

 be placed in any out-of-the-way 

 corner of the kitchen, closet, or 

 pantry. 



How to Make Imitation 

 Marble with Paints 



VERY good imitations of mar- 

 ble can be made by the fol- 

 lowing method: Procure a tank 

 sufficiently large for holding the 

 articles to be treated. The articles 

 are first given a coat of flat ground 

 color. For gray marble, apply a 

 coat of flat white, which is made of 

 white lead, turpentine and a little 

 dryer. For brown marble, add a 

 little raw sienna and burnt umber 

 to the ground color. After coat- 

 ing the articles, allow them to dry 

 thoroughly; then sand them with 

 No. o sandpaper. 



Fill the tank two-thirds full of 

 water. To secure the gray eff^ect, 

 take some flat white and add a 

 little drop-black, enough to make a light 

 lead color. With an old brush, spatter it 

 on the surface of the water. Add a little 

 more black and spatter it on the water. 

 The articles, previously painted and sanded, 

 are carefully slid into the tank. The colors 

 floating on the water readily adhere to the 



flat surfaces and the desired result is 

 obtained. 



For the brown marble effect, tint the 

 color with burnt umber, burnt sienna and 

 raw umber. For the black, mix some 

 turpentine with drop-black for the floating 

 colors, using a dark lead color for the 

 ground work. After the articles are per- 

 fectly dry, they may be sanded lightly and 

 varnished and also polished with a little 

 crude oil and pumice stone. 



To treat marble tops, apply a coat of 

 flat color for the ground. If in bad 



condition, add a 

 second coat. 

 When the 

 ground color is 

 thoroughly dry 

 and smooth, the 

 desired colors 

 may be stippled 

 on. After dry- 

 ing for five 

 minutes, spatter 

 on a solution 

 prepared by adding a lump of 

 potash, the size of a walnut, to a 

 pint of kerosene. The potash 

 cuts the colors and the oil blends 

 them together, producing a mot- 

 tled effect. With a little practice, 

 all the different marbles may be 

 imitated. The work may be 

 smoothed up and finished in shellac 

 or varnish. — John L. Jacklin. 



Combination iron- 

 ing board, table 

 and step-ladder 



Removing the Cones from Ball 

 Bearings on Magnetos 



THE cones or inner races of the 

 ball bearings used for sup- 

 porting armatures of ignition mag- 

 netos or small generators that 

 supply lighting current in auto- 

 mobiles are not easily removed by 

 ordinary means. The common 

 procedure is to force these on the 

 shaft against a shoulder. When 

 it is desired to remove a cone for 

 replacement, the usual method is 

 to force this off the shaft by driv- 

 ing in a cold chisel between the 

 shoulder and the cone so that it 

 acts as a wedge. Serious damage has been 

 done by inexperienced repairers and mo- 

 torists when attempts were made to remove 

 the cone at the collector-ring end of the 

 armature in this manner. The slightest 

 carelessness or slip of the chisel usually 

 results in breaking the ebonite or hard rub- 



