Galoot Image Central Pics from the Porch Home :: Login Album list :: Last uploads :: Last comments :: Most viewed :: Top rated :: My Favorites :: Search Home > User galleries > Schwartz > Projects Projects TITLE  +   -  FILE NAME  +   -  DATE  +   -  POSITION  +   -  2012_0030cs.jpgBLO or Paraffin Wax?50 viewsBoth screws were turned to 0.60in ( 0.025in undersize), then roundered, resulting in flattened crests on the thread. No.7 , the top screw, was cut after wiping the sized dowel down with BLO. The lower screw No.6 was lightly rubbed with paraffin wax after sizing. I fully expected a failure on this one, as it started badly, breaking out 3 inches of twisty grain, and forcing a restart.Schwartz 2012_0019s.jpg5/8in vintage boxwood screw box & sample No.657 viewsThis screw (No.4) was cut in off-the-shelf maple dowel, with no lubrication of any kind. It was not pre-sized or rounded. Note sharpness of the crests on the thread. The little hook has been removed from the cutter heel. The cutter is a very tight fit in its mortise. It takes considerable force to budge it.Schwartz 2012_0016s.jpgWooden screw samples No 1-488 viewsNo.1 - Cutter in as-found condition. Off-the shelf dry birch dowelling, not rounded. V at minor diameter is a sharp, but rough corner. Magnification shows tearing there. No.2 - Cutter as-found. Off-the shelf dry maple dowelling, not rounded. No change in condition at minor diameter. No.3 - Cutter honed, hook removed & out-cannel formed. Less tearing in the rounded bottom of the V. No.4 - No change from No.3 Schwartz 2012_0006cs.jpgScrewbox cutter side view51 viewsSchwartz 2012_0004cs.jpgScrewbox cutter top & side view49 viewsNote that the wings of the V are cut back considerably.Schwartz 2012_0003cs.jpgScrewbox cutter side & bottom view48 viewsSchwartz 2012_0002cs.jpgScrewbox cutter top & side view60 viewsInside of the V at lower right.Schwartz 2012_0000cs.jpgScrewbox cutter side view55 viewsOriginal condition of cutter. The external surface of the V was not honed, merely ground. Note tiny hook on the heel of the V seen in the shadow at bottom right. That caused tearing at the root diameter of the screws it cut.Schwartz 2004-00748s.jpgLathe file work on white oak endgrain204 viewsA lathe file was used to polish the end grain and bevels to make the grain legible on all surfacecs.Schwartz       9 files on 1 page(s) Powered by Coppermine Photo Gallery and JoomBla!