introduction | 3 · sharpening tips depending on sharpening stone diameters the settings on the...

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Introduction .......................................................................................... | 3

Overview of dry and wet sharpening machines .....................................| 4

Sharpening machines for dry grinding ................................................| 5

Sharpening machines for wet grinding ...............................................| 6

Sharpening recipes depending on sharpening stone diameters ...............| 7

Table of angles ..............................................................................| 8

Roughing-out gouges ......................................................................| 9 • Straight grind .........................................................................| 9 • Special grind (wings swept back) .............................................| 10

Spindle gouges ..............................................................................| 11 • Factory grind ..........................................................................| 12 • Traditional grind .....................................................................| 13 • Fingernail grind ......................................................................| 14 • Detail gouges, cross-sections ...................................................| 15 •Detailgouges,fingernailgrind,secondarybevel .........................| 16

Bowl gouges .................................................................................| 17 • Factory grind ..........................................................................| 18 • Traditional grind .....................................................................| 19 • Fingernail grind ......................................................................| 20 • Ellsworth special grind ............................................................| 21 • Additional tips on bowl gouges .................................................| 22

Hollowing gouges...........................................................................| 23 •StuartMortimergouges,multi-bevelgrind ................................| 23

Chisels .........................................................................................| 24

Scrapers.......................................................................................| 25

General sharpening service ..............................................................| 27

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Normally, woodturning tools aremadeofveryhard,wear-resistant HSS or PM steels that can be worked on water-stones only with enormous effort. We recommend using DICTUM DS 150 L or Creusen 7500 TS, Tormek, ProEdge, grinding machine. Their special grinding jigs enable a fast and consistent sharpen-ing,evenwithcomplicatedcutting edge geometries. After sharpeningtheouterbevel,polish the inner burr by hand with a multiform stone or a profiledleatherhoningwheel,similar to the process used for gouges.

Workshop recommendation »Sharpening for Woodturners« During the course, you will learn how to sharpen tools by hand and using sharpening machines like the Tormek, the Sorby ProEdge or the circular saw grinding machine with precision and in a way that protects the tool. This includes learning how to create a reproducible polished section and a traditional orfingernailgrind.SpecialgrindssuchastheEllsworthspecialgrind willalsobecovered.Participantswillbeshownhowtosharpengouges,chisels, parting tools, scrapers, ring tools and hook tools. The course is designedforbothnovicesandexperiencedwoodturnerswishingtoexpandtheir skills.

We recommend participating in one of our one-day sharpening courses. For more information see www.dictum.com/workshops

Our workshop recommendation!Sharpening for Woodturners Order our Workshop Scheduler!

Introduction

Roughing- out gouges

Spindle gouges

Bowl gouges

Scrapers, chisels

Dry

-Gri

ndin

g M

achi

nes

DICTUM® Low-speed Grinder DS 150 L

Free-handed or with Wolverinesharpening system



Free- handed with support

Creusen Double-wheeled Grinder 7500 TS





Sorby™ ProEdge Grinding Machine

Free-handed or with jig

Free- handed with support or jig



Wet

-Sha

rpen

ing

Mac

hine

s

Tormek® Sharpening-System

with jig

with jig

with jig

with jig

4

Overview of dry and wet sharpening machines

Overview of sharpening machines

Roughing- out gouges

Spindle gouges

Bowl gouges

Scrapers, chisels

Dry

-Gri

ndin

g M

achi

nes

DICTUM® Low-speed Grinder DS 150 L





Creusen Double-wheeled Grinder 7500 TS





Sorby™ ProEdge Grinding Machine





Wet

-Sha

rpen

ing

Mac

hine

s

Tormek® Sharpening-System

with jig

with jig

with jig

with jig

5

Sharpening machines for dry grinding

Themainargumentinfavourofdry grinding is the rapid material abrasion, which is as good as impossible when using a wet sharpening machine with certain types of steel. This reduces the grinding time.

DICTUM® Low-speed Grinder DS 150 L (No. 720782)

Creusen 7500 TS (No. 716025)

Sorby™ ProEdge

Double-wheeled Grinder with CBN Grinding Wheel (No. 716028)

Double-wheeled Grinder with Sharpening Set for Turning Tools (No. 711113)

Double-wheeled Grinder with Sharpening Set for Turning Tools with CBN Grinding Wheel (No. 711116)

Deluxe(No.720384)Basic (No. 720383)

Low-speed Grinder with CBN Grinding Wheel (No. 711241)

Low-speed Grinder with Sharpening Set for Woodturning Tools and CBN Grinding Wheel (No. 711243)

Low-speed Grinder with Sharpen-ing Set for Woodturning Tools (No. 711242)

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Possible complementary products for dry and wet grinding

Tormek Mounting Set BGM-100

TormekConverter OWC-1

OptiGrind CBN Grinding Wheel

DICTUM Sharpening Gauge

Tormek® T-4/T-8 (No. 705195/ 716034)

Tormek® T-8 for Woodturners with Blackstone (No. 716056)

Tormek® T-8 for Woodturners with Blackstone and Wood- turner’s Kit (No. 716057)

Sharpening machines for wet grinding

Themainargumentinfavourofwet grinding is the low heat generation.Thispreventsanypotentiallossofhardness.Thewetabrasiveactionalsosignificantly reducesdustexposure.

Tormek® T-8 for Woodturners with DC-250 Diamond Grinding Wheel, K 360 and Woodturner‘s Kit (No. 716054)

Noriskofoverheating

7

Sharpening tips depending on sharpening stone diameters

The settings on the honing guides of sharpening machines, DICTUM DS 150 L, Creusen 7500 TS and Tormek, depend on the wheel diameter of the sharpeningstones.However,thestonediametersofgrindingwheels(exceptCBNanddiamondgrindingwheels)decreaseundertheabrasiveactionofsharpening and dressing.

Tormek:The reduction in the diameter of grinding wheels, which gradually abrade, canbecompensatedfortoacertainextentbyusingtheTurningToolSetterTTS-100. We therefore recommend using the TTS-100 with the Tormek sharpeninginstructionswhenpossible.However,iftheusedstoneisalreadyheavilyworn,theremayalsobeslightchangesinangleandgeometry,evenwhen using the TTS-100. This can also occur when combining both sharpen-ing systems (pre-grind with the Double-wheeled Grinder/regrind with the Tormek). In order to obtain uniform results with this machine during each sharpening process, we recommend using CBN or diamond grinding wheels.

DICTUM DS 150 L, Creusen 7500 TS:If the small wheel diameter (150 mm) of this machine is reduced by additional 10 mm, there is a risk of hollow-grinding and thus a weakening of the bevel.Furthermore,thegeometriesofthegrindwillchange.Inordertoobtain uniform results with this machine during each sharpening process, we recommend using CBN or diamond grinding wheels.

CBN and Diamond grinding discs problem solver:TheuseofCBNanddiamondgrindingwheelspreventsstonediameterreduc-tion,thusavoidingcuttingedgegeometriesfrombeingchanged.Furthermore,thesewheelssavetime(notrueingisnecessary)anddonotgeneratetoomuchheat(reducedriskofoverheating)underhighspeeds(double-wheeledgrinder).Inaddition,CBNoffersaverygoodprice-performanceratio,astheslightly higher acquisition costs are compensated for by the more robust and aggressivecrystalstructure.

Fingernail grind ground on wheel diameter 250 mm.

Fingernail grind ground on wheel diameter 140 mm -beveltendstobecomehollow.Thechangesin geometryareonlymarginallyvisible,buttheyare sufficienttoinfluencetheintendeduseofgouges of crack-prone steels (PRO-PM) and with sharp bevelangles.

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Table of angles

Theanglesgiveninthefollowingtablecanbeusedasaguideline.Inspecialcases,thecuttinganglesmaybedifferentfromthespecifiedvalues.

Scraper to 75° Bowl gouge 45°-65° Chisel 45° Roughing-out gouge 35°-40° Spindle gouge 35°

Quick-check angle table

9

Straight upper edge90° offsets precisely shapeable

Geometries/grinding configurations Grind35°-40°bevelangle

Rounded upper edgecomfortable hand position yet free guidance

STRAIGHT GRINDStandard grind.

DICTUM DS 150 L, Creusen 7500 TS•AdjustthedistanceoftheWolverine V-armtothebevelangle

Tormek• Place bracket horizontally • TTS-100, hole distance B (both wheels touch the grinding wheel), SVS-50, protrusion 53 mm•Turnuntiltheupperedgesarevertical (see picture)

ProEdge•InsertinV-block,adjusttheangleplatetothebevelangle•TurnthetoolintheV-blockuntiltheouteredgesarevertical

Roughing-out gouges

Straight grind

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Roughing-out gouges


SPECIAL GRIND (WINGS SWEPT BACK) Enables rough pull cuts - similar to a spindle gouge.

DICTUM DS 150 L, Creusen 7500 TS• Free-hand grinding with support while movingtheaxisoftheturningtoolabout 20° and turning the tool at the same time• Pay attention to symmetry

Tormek • Similar configurations as for a straight grind, but the upper edges are turned beyondtheverticalposition• Pay attention to symmetry

ProEdge•Free-handgrindingwithsupportwhilemovingtheaxis of the turning tool about 20° and turning the tool at the same time

Special grind

www.dictum.com

on sharpening roughing-out gouges availableonline.Vide

90°

20°

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Spindle gouges

English-styleFlute Notmilledover the entire length.

+ Stable, especially if there arevibrationsorifthegouge protrudes beyond the tool rest

European-/continental-style+ Forged - therefore stable structure + Rounded upper edge enables a comfortable hand position

FluteMilledovertheentirelength.+ Gouges can be sharpened withaguideover the entire lifetime

Flute runs 3/4 of the length.

Flute runs the entire length.

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Spindle gouges

Geometries/grinding configurationsGrind35°bevelangle

FACTORY GRIND You can work with this but it is not ideal.

DICTUM DS 150 L, Creusen 7500 TS• Free-handgrindingwithsupportwhilemovingtheaxis of the turning tool about 20° and turning the tool at the same time• Pay attention to symmetry

Tormek• Place bracket horizontally• TTS-100, hole distance A (both wheels touch the grinding wheel), SVS-50, protrusion 53 mm

ProEdgeEnglish-style• InsertinV-block,adjusttheangleplatetothebevelangle

European-style• Smaller widths: Insert in V-block, adjusttheangleplatetothebevelangle• Lagerwidths:RollingmovementintheV-blockishindered

Factory grind

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on sharpening spindel gouges availableonline.Vide

13

Spindle gouges


TRADITIONAL GRIND Good access to edges, good guidance thanks to the swept back wings. For transitions and V-shaped notches.

DICTUM DS 150 L, Creusen 7500 TS• Vari Grind, protrusion 65 mm, position 2 (second notch from the front)• Pushbackthearmuntilyoureachthebevelangle

Or for further working on the Tormek• OWC-1withTormekConverter,TTS-100, hole distance A (both wheels touch the grinding wheel), SVD-186, position 2, 65 mm protrusion

Tormek• Place bracket horizontally• TTS-100, hole distance A (both wheels touch the grinding wheel), SVD-186, position 2, 65 mm protrusion

Polishing with a leather honing wheel• Place bracket horizontally• TTS-100, hole distance A (both wheels touch the leather honing wheel), gouge stays clamped in the SVD-186, use polishing paste

ProEdge• Fingernail grinding jig• Firstholeoftheboss(withoutextender),position2, protrusion 55 mm, adjust the angle to the gouge

Traditional grind

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Spindle gouges


FINGERNAIL GRIND Narrower V-shaped notches and transitions possible.

DICTUM DS 150 L, Creusen 7500 TS• Vari Grind, protrusion 65 mm, position 2 (second notch from the front)• Pushbackthearmuntilyoureachthebevelangle• Start at the side with little pressure in the centre of the tool

Or for further working on the Tormek• OWC-1withTormekConverter,TTS-100, hole distance B (both wheels touch the grinding wheel), SVD-186, position 3, 55 mm protrusion

Tormek• Place bracket horizontally• TTS-100, hole distance B (both wheels touch the grinding wheel), SVD-186, position 3, 55 mm protrusion

Polishing with a leather honing wheel• Place bracket horizontally• TTS-100, hole distance B (both wheels touch the leather honing wheel), gouge stays clamped in the SVD-186, use polishing paste

ProEdge• 35° is not possible; the minimum angle that can be sharpened inthethirdholeofthefingernailgrindingjigextenderis48°• Free-handed with support

Fingernail grind

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Spindle gouges (Detail gouges)

Round cross-sectionFluteNotmilledover the entire length.

• Theshallowflute allowsexcellentstability, eveninworkwherethegouge protrudeswellabove the end stop• Fingernail grind withsecondarybevel

Rectangular cross-sectionFluteNotmilledover the entire length.

• Theshallowfluteand the rectangular cross-section (thatkeepvibrationtoaminimum), allow the best possible access to narrowest recesses• Fingernail grind withsecondarybevel

www.dictum.com

on sharpening detail gouges availableonline.Vide

round cross-section

rectangular cross-section

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Geometries/grinding configurations Grind35°/25°bevelangle

FINGERNAIL GRIND WITH SECONDARY BEVEL

DICTUM DS 150 L, Creusen 7500 TSMainbevel35°bevelangle:• Vari Grind, protrusion 65 mm, position 3 (third notch from the front)• Push back the arm until you reach thebevelangle(possiblereadjustment of the Vari Grind position required)

Secondarybevel25°bevelangle:• Vari Grind, protrusion 65 mm, position 3 (third notch from the front)• Push back the arm until youreachthebevelangle

TormekMainbevel35°bevelangle:• Place bracket horizontally• Caution: You cannot use the TTS-100 for this grind! SVD-186, position 2, protrusion 65 mm, wooden distance block of 4 cm between bracket and stone

Secondarybevel25°bevelangle:• Place bracket horizontally• Sameadjustmentasonmainbevel, you just loosen the screw at the end of theSVD-186andpushittotheveryback; thebevelangleresultsautomatically

Spindle gouges (Detail gouges)

Fingernail grind withsecondarybevel

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Traditional grind

Ellsworth special grind

notsuitableforfingernailgrind

wings swept far back

U-shape gouge U-shaped fluteMainly for working on the outside of bowls.

Ellsworth gougeDeep, parabolic fluteFor inside and outside, rough and fine work.

Bowl gouges

Factory grind

Traditional grind

Superflute gougeParabolic fluteUniversalapplication of the gouge.

Fingernail grind

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Bowl gouges


FACTORY GRINDYou can work with this but it is not ideal.

+ Simple, safe cut for the outside of bowls• Bevelrubbingpullcut• Facing off cut across the grain• Hollowing cut

DICTUM DS 150 L, Creusen 7500 TS• Free-handgrindingwithsupportwhilemovingtheaxisof the turning tool about 20° and turning the tool at the same time• Pay attention to symmetry

Tormek• Place bracket horizontally• TTS-100, hole distance A (both wheels touch the grinding wheel)• SVS-50,adjustdistanceaccordingtothebevelangle(50°-65°)

ProEdge• With V-block, adjust support accordingtothebevelangle

Factory grind

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on sharpening bowl gouges availableonline.Vide

19

TRADITIONAL GRIND

• Bevelrubbingpullcut• Facing off cuts across the grain• Hollowing cut

DICTUM DS 150 L, Creusen 7500 TS• Free-hand grind: start on the outside, pay attention to symmetrical wings

Tormek• TTS-100, hole distance A (both wheels touch the grinding wheel), SVD-186, position 2, 65 mm protrusion, adapt according to thebevelangle

ProEdge• With fingernail grinding jig, hole 1, e.g. with position 2, protrusion58mm,50°bevelangle,adjusttheheightof the grinding arm according to the angle• Free-handed with support

Bowl gouges

Geometries/grinding configurations Grind50°(50°-65°possible)bevelangle

Traditional grind

Traditional grind

TRADITIONAL GRIND WITH U-SHAPE

• Bevelrubbingpullcut (for the outside of bowls)• Lightly grind the back topreventtheedges from damaging the surface of the wood (see picture)• Caution:ifyouremovetoomuch material from the back of the turning gouge there is a danger of hooking while turning

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Bowl gouges

Geometries/grinding configurations Grind45°bevelangle

FINGERNAIL GRIND

+ Highest versatility• Trueing up cut along the grain• Pull cut• Bevelrubbingpullcut• Angelshaircut(verygoodsurface)• Facing off cut across the grain• Hollowing cut

DICTUM DS 150 L, Creusen 7500 TS• Vari Grind, protrusion 53 mm, position 2• Reworking:thecentreoftheinitialbeveltouches thegrindingwheel,removematerialonlyonthesides

Or for further working on the Tormek• OWC-1converter,TTS-100,holedistanceA(bothwheelstouch the grinding wheel), SVD-186, position 2, protrusion 65 mm

Tormek• Place bracket horizontally• TTS-100, hole distance A (both wheels touch the grinding wheel), SVD-186, position 2, protrusion 65 mm

ProEdge• 45° is not possible; the minimum grinding angle with fingernail grind on the ProEdge is 48°• Usethethirdholeofthefingernailgrindingjigextender; preciseindicationsonprotrusionorpositioncannotbegiven, because they depend on the length of the gouge worked on

Fingernail grind

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ELLSWORTH SPECIAL GRIND

+ Highest versatility• Trueing up cut along the grain• Pull cut• Bevelrubbingpullcut• Angelshaircut(verygoodsurface)• Facing off cut across the grain• Hollowing cut

DICTUM DS 150 L, Creusen 7500 TS• Vari Grind, protrusion 55 mm, position 2• Start on the outsides

Or for further working on the Tormek• OWC-1converter,TTS-100,holedistanceA (both wheels touch the grinding wheel), SVD-186, position 6, protrusion 75 mm

Tormek• TTS-100, hole distance A (both wheels touch the grinding wheel), SVD-186, position 6, protrusion 75 mm• Grind to the centre, then the other side

ProEdge• Due to the limited turning radius, the ProEdge quickly reaches its limits; the length of smaller gouges often is not enough• Fingernail grind with wings swept far back possible with the fingernail grinding jig extenderonposition3• Precise indications on protrusioncannotbegiven, because they depend on the length of the gouge worked on• Otherwise free-handed with support


www.dictum.com

on sharpening Ellsworth gouges availableonline.Vide

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Rounding off the edges by handToremovethesharpedgeontheendofthebevelwerecommendtheHonStar withCBNcoating(No.704849).Theresult:Betterworkingincurveswithout canting in the workpiece.

SecondarybevelontheDICTUM DS 150 L, Creusen 7500 TSTodeterminethemainbevel,adjusttheVariGrindonaprotrusionof75mmonposition5(fifthnotchfromthefront)andslidethearmuntiltheexistingbevelisreached.ForgrindingthesecondarybevelloosentheVariGrindlocking screw and adjust the angle on position 7 (last notch). Now grind the beveluntilthesecondarybevelisapproximatelyhalfthatofthefirstbevel.

SecondarybevelontheTormekTodeterminethemainbevel,adjustthebracketwiththeTTS-100,holedistance A on the wheel diameter. Take the SVD-186, protrusion 65 mm, back end stop fully retracted. Forgrindingthesecondarybevelloosentherearscrew of the SVD-186 and slide the guidance to the end stop. Now grind the beveluntilthesecondarybevelisapproximatelyhalfthatofthefirstbevel.

Grindingthemicrobevel

DICTUM DS 150 L, Creusen 7500 TSAdjust the Vari Grind to your standard grind on your machine, slide the arm tothefrontuntilaspaceofapprox.1mmisbetweenthecuttingedgeandthestone.Nowsharpenuntilyougetthedesiredmicrobevel.

TormekAdjust the SVD-186 to your standard grind on your machine, now turn the fine tuning on theuniversalsupporttwofullturns tothefront,slidetheuniversal support to the end stop and tighten it. Now sharpen until you getthedesiredmicrobevel.

Additional tips on bowl gouges

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on additional tips on bowl gouges availableonline.Vide

Bowl gouges

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Hollowing gouges Stuart Mortimer gouges (No. 702032 and 702009)

Geometries/grinding configurations Multi-bevelgrind

MULTI-BEVEL GRIND

• With special grind especially suited for hollowing out deep objects• Itsshortfluteleavesmorestrength in the shaft for increased rigidity, which allowsthetooltoabsorbvibrations• Ideal for hard wood

DICTUM DS 150 L, Creusen 7500 TSFirstbevelVari Grind, protrusion 75 mm, lateralanglesettingdeviceto theveryfront,arm17.5cmback from the front edge of the end stop

SecondbevelAdjust Vari Grind on position 2 (second notch from the front)

ThirdbevelAdjust Vari Grind on position 3 (third notch from the front)

FourthbevelAdjust Vari Grind on position 4 (fourth notch from the front), then take it out and round off the edge free-handed to a clean transition; you can then file the edge with a diamond file (No. 705374)

Multi-bevelgrind

www.dictum.com

on sharpening Stuart Mortimer gouges availableonline.Vide

24

Chisels

DICTUM DS 150 L, Creusen 7500 TS• Grind free-handed with support

Or for further working on the Tormek• Tormek Mounting Set BGM-100, TTS-100, hole distance B (both wheels touch the grinding wheel), adjust SVS-50 on 20° inclination, protrusion 55 mm • Grinduntilthebevelsare the same size; if necessary, grind the first side again

Tormek• Place bracket horizontally• TTS-100, hole distance B (both wheels touch the grinding wheel), adjust SVS-50 on 20° inclination, protrusion 55 mm• Grinduntilthebevelsare the same size; if necessary, grind the first side again


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Scrapers

DICTUM DS 150 L, Creusen 7500 TS• Grind free-handed with support

Tormek• Place bracket horizontally• Adjust SVD-110 to the desired bevelangle


Normally, scrapers cut viaaburronthe cutting edge. This burr can be created in a similar way to the burr on a scraper blade, but it usually forms naturally during sharpening. Therefore, wet grinding is not recommended for scrapers, because the created burr is not »strong« enough. You also should not polish the cutting edge aftersharpeningtoremovetheburr.

Cross-section scraper with grounded burr

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We reward loyal participants:

WORKSHOPS * Books, DVDs, power tools from Festool,

Mafell, Bosch Professional and Lamello, as well as power tools with voucherandalreadyreduced itemsareexcludedfromthis offer. For more information see www.dictum.com/ non-discountable-items

Experience our craft courses: unique, fascinating & exciting! Order our free Workshop Scheduler online at www.dictum.com or via telephone +49 (0)9931 4058-902

Participants

receive a

10 % DISCOUNT

on any purchases*

for the duration

of a workshop

10 % discountFor the duration of a workshop, participantswillreceivea10% discount on any purchases* made in our shops.

Bonus card for workshopsLoyalty pays! After participatinginfive workshops, you will receivea€50 DICTUM shopping voucher.Foreachfurtherparticipa-tion,thevalueofyourvoucherwillincreaseby€10.Youwillreceivethe bonus card automatically at the start of the course.

Combination bonusYouwillreceivea€20DICTUMshoppingvoucherforbookingacombinationofbasicandadvancedcourses or a series of courses.

ApprenticesUponverification,apprenticeswillreceivea10%discountonwork-shop fees.

27

General sharpening service

Our perfectly trained sharpening team is happy to sharpen your blades.

Knives €7.00

Axes,woodturningtools, carvingandsculptingtools,scissors €9.00

Chisels(onlybevelandhoningtheback) €6.00

Chisels(bevelandback) €13.00Inclusive additional trueing and polishing of the back

Planeblades(beveland»Rulertrick«*onthebackoftheblade) €6.00

Planeblades(bevelandback) €13.00Inclusive additional trueing and polishing of the back

Garden and hedge shears €12.00

Hair cutting scissors and razors €19.00

For extremely time-consuming sharpening operations that require an increased effort in the process, we reserve the right to charge additional €7.00. In this case, our sharpening expert will get in touch with you before starting the work.

*»Ruler trick« - The Lie-Nielsen MethodA thin steel ruler is placed along the long edge of a fine-grit honing stone and theverytipofthebackofthebladepolishedalongtheoppositelongedgeofthestone.Seeexpertknowledge»SharpeningPlaneBlades«atwww.dictum.com

Plus shipping charges (prices include VAT).

Sharpening advice: +49 (0)9931 4058-971

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28Version 05 / 2019

DICTUM GmbH, Gottlieb-Daimler-Str. 3, 94447 Plattling, Germany Phone +49 (0)9931 4058-902 Fax +49(0)99314058-800Email [email protected] shop www.dictum.com

Sharpening advice | Sharpening servicePhone +49 (0)9931 4058-971

Request workshop advicePhone +49 (0)9931 4058-981

introduction | 3 · sharpening tips depending on sharpening stone diameters the settings on the...

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