Three Ways of Threading Wood D Hill（三种方法的线程木D山）.pdf

Three Ways of Threading Wood Duane Hill References: • “Making Screw Threads in Wood”, Fred Holder • “Notes From The Turning Shop”, Bill Jones • “Hand Thread Chasing”, DVD by Alan Batty • “Turning Boxes With Threaded Lids”, DVD by Bonnie Klein Threading for Woodturning Jigs Materials used: ¾” medium density fiber board (MDF), ultra high molecular weight (UHMW) plastic, hardwood Uses: vacuum chucks, headstock support shapes/jigs, tailstock/live enter shapes Tools needed: drill chuck, 4 jaw chuck, drill bit(s), tap, crescent wrench, live center Thread Thread Description Diam per Inch Drill M33x5 (Oneway headstock) 33mm 5 1 1/4 1 1/4 x 8 (larger lathes headstock) 1 1/4 8 1 1/8 1 x 8 (mini lathes, smaller lathes headstock) 1 8 3/4 3/4 x 16 (craftsman) 3/4 16 21/32 3/4 x 10 (Oneway/Powermatic live center) 3/4 10 21/32 1. Mount piece between centers. Bring to round. 2. Turn a tenon on both ends of piece to fit your chuck. 3. Mount piece in chuck 4. Mount drill chuck in tailstock with appropriate drill 5. Drill to appropriate depth • Note: Oneway headstock has a shoulder that needs a recess 6. Remove drill chuck and add live center to tailstock 7. Place tap in drilled hole of piece. Bring live center up to dimple on end of tap to just hold in place 8. Place crescent wrench over square portion of tap and lay on top of tool rest 9. With handwheel, turn spindle ¼ turn. Turn tail stock ¼ in opposite direction. This will feed the tap into the piece. The live center keeps pressure on the ta