Wool Picker (Plans)

Please bear in mind that I built my wool picker using scrap lumber that I already owned.  It is not necessary to built a picker to these exact dimensions.  Having said that I can attest that this design does work, and quite well.

MATERIALS

Hardware:

3″ common, uncoated nails, top card (72) @ 3 rows of 3

3″ common, uncoated nails, bottom card (112) @ three rows of 4

3″ deck screws for attaching plywood sides to plywood bottom (pre-drill these) (10)

1 1/2″ screws for attaching upper and lower rails to plywood sides (26)

5/8″ Plywood

-10″ x 4′ (2) sides
-11 1/2″ x 4′ bottom
-9 3/4″ x 14 1/2″ (1 ) and 11 1/4″ x 15 3/4″ (1) upper nail card and top slide
-16 1/2″ x 9 3/4″ (1) bottom nail card

1″ Lumber

-3 1/2″ x 4′ (2) upper rail, interiour
-5″ x 4′ (2) lower rail, interiour

All-thread rod:

(2) 13 1/2″ lengths with (8) washers and (8) nuts

…refer to photos (below)…

1 – attach plywood side to bottom using 3″ deck screws, 5 per side – pre drill holes (an extra set of hands at this point is helpful) – turn box upright at this point

2 – attach inner lower rail (5″ x 4′) along each side, screwing from the outside of the box to draw the rails in tight using 1 1/2″ deck screws

3 – set 5/8″ plywood across these rails at each end and add a asher for a shim, then set upper rail in place and screw this rail into place using 1 1/2″ deck screws

4 – check to see that slide functions freely

5 – measure down and in from end tops to align holes for threaded rod, drill and attach as shown (by moving nuts in and out your can perfectly align the rails to take out any sideways movement in the slide

6 – transfer a 1″ (on rows), 1/2″ staggered (every other row) grid pattern onto your nail cards (refer to photos), then using a drill press lightly dimple the plywood at these points (this will allow the drill bit to grip at these points when drilling at 45 degrees), set up drill press to 45 degree template, drill holes slightly smaller than 3″ common nail diametre

7 – centre top card on top slide, drill holes slightly larger than bolts and bolt together as shown (I used scrap bolts from other discarded projects)

8 – set bottom card into place, drill, and bolt into place

9 – note the space between teeth when viewed from end, remove top bolted card and shim this space out using washers (not listed above) until feel almost touch

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