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Woodturning Terminology

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Woodturning Terminology SOUTHERN TURNERS GLOSSARY OF TERMINOLOGY Woodturning has its own language, like every field of endeavour. Some words and concepts may be familiar depending on one’s background in woodworking but many of the terms are specialised. This Sheet will focus on some of the more common terms one is likely to encounter whether reading columns, discussions with experienced or novice turners or watching demonstrations. An alphabetical listing seems to be as good as any way of presenting this information – in many cases a short explanation as to what it means to a turner has been included to help understand the context of the terminology. While this is by no means an exhaustive listing, we have tried to cover the most useful terms, but please do provide feedback to the Southern Turners with any questions or suggestions you might have about these or other terms you may run across. INDEX Abrasives, ....................................................... 3 Blowout, ......................................................... 6 Burr (3), .......................................................... 9 Accelerator – CA or super glue, ..................... 3 Boring bar, ...................................................... 6 CA Cyanoacrylate Adhesive, ......................... 10 Banjo, ............................................................. 4 Bound Water, ................................................. 6 Callipers, ....................................................... 10 Bead, .............................................................. 4 Box/es, ............................................................ 7 Captive ring, ................................................. 11 Bed, ................................................................ 4 Burl, ................................................................ 7 Catch, ........................................................... 11 Between Centres, ........................................... 5 Burnishing, ...................................................... 8 CBN Wheel, .................................................. 12 Bevel, .............................................................. 5 Burr (1), ........................................................... 8 Centre(s), ...................................................... 12 Blank, .............................................................. 6 Burr (2), ........................................................... 8 Chatoyance, ................................................. 13 Southern Turners – Glossary of Terminology Issue 1 - August 2019 1 Chatter, ........................................................ 13 Glue block, .................................................... 27 Pyrography, .................................................. 40 Chatter tool, ................................................. 14 Gouge, .......................................................... 27 Reverse Chucking, ........................................ 41 Chuck, ........................................................... 15 Grain, ............................................................ 27 Ring centre, .................................................. 41 Cole Jaws, ..................................................... 16 Growth rings, ................................................ 28 Rough Turning, ............................................. 42 Concentric turning, ...................................... 16 Hardwood, .................................................... 28 Roughing Cut, ............................................... 42 Coring, .......................................................... 16 Headstock, .................................................... 29 Rubbing the Bevel, ....................................... 43 Cove, ............................................................. 17 Heartwood, ................................................... 29 Sandpaper, ................................................... 43 Cutting, ......................................................... 17 High speed steel, .......................................... 29 Sap Wood, .................................................... 43 Cutting air, .................................................... 17 Honing, ......................................................... 30 Saw tooth bit, ............................................... 44 Dovetail Recess, ........................................... 18 Hook tool, ..................................................... 30 Scrapers, ....................................................... 45 Ebonising, ..................................................... 18 Inboard Turning, ........................................... 31 Scraping Cut, ................................................ 44 Eccentric turning, ......................................... 20 Index plate, ................................................... 32 Seasoning (drying), ....................................... 46 Electronic variable speed (EVS), ................... 19 Inertia sander, .............................................. 31 Segmented turnings, .................................... 46 Equilibrium moisture content (EMC), .......... 19 Jacobs chuck, ................................................ 33 Sharpening system / jig, ............................... 47 Faceplate, ..................................................... 20 Janka Hardness, ............................................ 32 Skew (Tool), .................................................. 48 Faceplate Turning, ........................................ 21 Laminated work, ........................................... 33 Softwood, ..................................................... 48 Fiddleback, ................................................... 21 Live Centre, ................................................... 34 Spalted Wood, .............................................. 48 Figure, .......................................................... 22 Live edge, ...................................................... 34 Spigot, .......................................................... 49 Filler, 22 Mandrel, ....................................................... 35 Spindle gouge, .............................................. 49 Fingernail grind, ........................................... 22 Medullary Rays, ............................................ 35 Spindle Roughing Gouge, ............................. 49 Finial, ............................................................ 23 Moisture content, ......................................... 35 Split turning, ................................................. 50 Finishes, ........................................................ 23 Morse taper, ................................................. 36 Steady, ......................................................... 50 Finishing, ...................................................... 24 Natural Edge, ................................................ 37 Supported Cut, ............................................. 51 Finishing Cut, ................................................ 24 Negative Rake Scraper, ................................. 37 Surface check, .............................................. 51 Flame, ........................................................... 24 Nub (nib, nubbin or dib), .............................. 38 Swept Back Grind, ........................................ 51 Flitch, ............................................................ 25 Ogee, ............................................................ 38 Tailstock, ...................................................... 52 Form, ............................................................ 25 Outboard turning, ......................................... 39 Tear-out, ...................................................... 52 Forms – hollow, closed, open, ..................... 25 Parting tool, .................................................. 39 Tenon, .......................................................... 52 Forstner bit, .................................................. 26 Pen kit, .......................................................... 40 Tool Rest, ..................................................... 53 Friction polish, .............................................. 26 Punky, ........................................................... 40 Waney edge, ................................................ 53 Southern Turners – Glossary of Terminology Issue 1 - August 2019 2 Abrasives Also commonly known as sandpaper. An abrasive material made by gluing grains of an abrasive substance to a cloth or paper surface. The most common abrasive is aluminium oxide (AlO2). Abrasive cloth and paper should be considered as a cutting tool and when blunt they should be discarded. Typically, woodturners use 80, 120, 180, 240, 320 and 400 grit abrasives however some turners work up to 2000 grit to achieve a mirror like finish. Worn out 120 grit does not do the job of 180 grit paper as some of the original particles will remain and leave scratch marks on your work. A good suggestion is to use abrasives like someone else is paying for them. Accelerator – A commercial or homemade product used to quicken the hardening CA or super process of CA or super glue. glue Besides water vapour, cyanoacrylate polymerises in presence of alcohol and basic compounds (including weak amines). The latter are used to produce a superglue “kicker” – a compound which triggers quick polymerisation of the glue. Baking soda is one well-known substance
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