SIST EN 1870-1:2007
(Main)Safety of woodworking machines - Circular sawing machines - Part 1: Circular saw benches (with and without sliding table), dimension saws and building site saws
Safety of woodworking machines - Circular sawing machines - Part 1: Circular saw benches (with and without sliding table), dimension saws and building site saws
This document deals with the significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to stationary and displaceable circular saw benches (with or without sliding table and/or demountable power feed unit), dimensions saws and building site saws, hereinafter referred to as “machines”, designed to cut solid wood, chipboard, fibreboard, plywood and also these materials, if they are covered with plastic edging and/or plastic/light alloy laminates, when they are used as intended and under the conditions foreseen by the manufacturer.
NOTE 1 For the definition of stationary and displaceable machine see 3.13 and 3.14.
NOTE 2 Circular saw benches, and dimension saws are used for ripping, cross cutting, dimensioning and grooving. Building site saws are used for ripping, cross cutting and dimensioning.
The requirements of this document apply also to machines designed for grooving with a width not exceeding 20 mm in one pass by using a milling tool.
This document does not apply to:
a) machines set up on a bench or a table similar to a bench, which are intended to carry out work in a stationary position, capable of being lifted by one person by hand. The bench can also be an integrated part of the machine if it consists of hinged legs which can be extended down;
b) hand held woodworking machines including any adaptation permitting their use in a different mode, i.e. bench mounting.
NOTE 3 Transportable electrically driven machines are covered by the requirements of EN 61029-1:2000 together with EN 61029-2-1:2002; hand-held woodworking machines and saw benches to form an integrated whole with a hand-held woodworking machine are covered by EN 60745-1:2003 together with EN 60745-2-5:2003.
For the purpose of this document building site saws having a tiltable spindle are considered to be circular saw benches.
This document is not applicable to circular saw benches (with and without sliding table), dimensions saws and building site saws wh
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 1: Tischkreissägemaschinen (mit und ohne Schiebetisch), Formatkreissägemaschinen und Baustellenkreissägemaschinen
Dieses Dokument behandelt die im Abschnitt 4 aufgeführten signifikanten Gefährdungen, Gefährdungs¬situationen und Gefährdungsereignisse, die auf stationäre und verschiebbare Tischkreissägemaschinen (mit und ohne Schiebetisch und/oder abnehmbaren Vorschubapparat), Formatkreissägemaschinen und Baustellenkreissägemaschinen zutreffen, im Folgenden als Maschinen bezeichnet , die konstruiert sind zum Schneiden von Massivholz, Spanplatten, Faserplatten, Sperrholz, sowie diesen Werkstoffen, wenn sie mit Kunststoffkanten und/oder mit Kunststoff/Leichtmetall-Legierung beschichtet sind, wenn sie bestimmungsgemäß und entsprechend den durch den Hersteller vorhersehbaren Bedingungen verwendet werden.
ANMERKUNG 1 Hinsichtlich der Definition von stationärer und verschiebbarer Maschine siehe 3.2.13 und 3.2.14.
ANMERKUNG 2 Tischkreissägemaschinen und Formatkreissägemaschinen werden zum Längs-, Quer- und Format¬schneiden und zum Nuten eingesetzt. Baustellenkreissägemaschinen werden zum Längs-, Quer- und Formatschneiden verwendet.
Die Anforderungen in diesem Dokument gelten auch für Maschinen, die auch zum Nuten von einer Breite, die 20 mm nicht übersteigt, mittels einem Fräswerkzeug in einem Arbeitsgang konstruiert sind.
Dieses Dokument gilt nicht für:
a) Maschinen, die auf ein Gestell oder auf einen Tisch, der einem Gestell ähnlich ist, aufgesetzt sind und die vorgesehen sind, während des Betriebs stationär verwendet zu werden und die von Hand von einer Person angehoben werden können. Das Gestell kann auch ein fester Bestandteil der Maschine sein, wenn es aus scharnierbefestigten Füßen besteht, die heruntergeklappt werden können;
b) handgeführte Holzbearbeitungsmaschinen einschließlich irgendwelchen Einrichtungen, die ihre Verwendung in einer anderen Weise d. h. in einem Gestell montiert, ermöglichen.
Sécurité des machines pour le travail du bois - Machines a scier circulaires - Partie 1: Scies circulaires a table de menuisier (avec ou sans table mobile), scies au format et scies de chantier
Le présent document traite de tous les phénomenes dangereux, situations et événements dangereux significatifs, tels que listés dans l’Article 4, qui se rapportent aux scies circulaires a table de menuisier (avec ou sans table mobile et/ou unité d’alimentation escamotable), aux scies au format et aux scies de chantier,
ci-apres désignées sous le terme « machines ». Celles-ci sont conçues pour la coupe de bois massif, de panneaux de particules et de fibres, de contreplaqué ainsi que ces matériaux lorsque leurs surfaces ou leurs chants sont recouverts de plastique et/ou de plastique/alliages légers, lorsqu’elles sont utilisées comme prévu et dans les conditions prévues par le constructeur.
NOTE 1 Pour la définition de machines fixes et de machines transportables, voir 3.13 et 3.14.
NOTE 2 Les scies circulaires a table de menuisier et les scies au format sont utilisées pour le délignage, pour le tronçonnage, pour la coupe au format et pour le rainurage. Les scies de chantier sont utilisées pour le délignage, pour le tronçonnage et pour la coupe au format.
Les prescriptions du présent document s’appliquent aussi aux machines conçues pour le rainurage avec une largeur ne dépassant pas 20 mm par passage d’une fraise.
Le présent document ne s’applique pas :
a) aux machines montées sur un établi ou une table similaire a un établi, qui sont conçues pour réaliser un travail en position fixe et qui peuvent etre soulevées a la main par une personne. L’établi peut également faire partie intégrante de la machine s’il est composé de pieds articulés qui peuvent etre dépliés ;
b) aux machines a bois portatives, y compris toute adaptation permettant leur utilisation de maniere différente, par exemple fixées sur un bâti.
Varnost lesnoobdelovalnih strojev - Krožne žage - 1. del: Delovne mize (s podajalno mizo ali brez nje), žage za rezanje na mero in žage na gradbišču
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.JUDGELãþXSicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 1: Tischkreissägemaschinen (mit und ohne Schiebetisch), Formatkreissägemaschinen und BaustellenkreissägemaschinenSécurité des machines pour le travail du bois - Machines a scier circulaires - Partie 1: Scies circulaires a table de menuisier (avec ou sans table mobile), scies au format et scies de chantierSafety of woodworking machines - Circular sawing machines - Part 1: Circular saw benches (with and without sliding table), dimension saws and building site saws79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-1:2007SIST EN 1870-1:2007en01-junij-2007SIST EN 1870-1:2007SLOVENSKI
STANDARDSIST EN 1870-1:20001DGRPHãþD
SIST EN 1870-1:2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1870-1April 2007ICS 79.120.10Supersedes EN 1870-1:1999
English VersionSafety of woodworking machines - Circular sawing machines -Part 1: Circular saw benches (with and without sliding table),dimension saws and building site sawsSécurité des machines pour le travail du bois - Machines àscier circulaires - Partie 1: Scies circulaires à table demenuisier (avec ou sans table mobile), scies au format etscies de chantierSicherheit von Holzbearbeitungsmaschinen -Kreissägemaschinen - Teil 1: Tischkreissägemaschinen(mit und ohne Schiebetisch), Formatkreissägemaschinenund BaustellenkreissägemaschinenThis European Standard was approved by CEN on 24 February 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1870-1:2007: ESIST EN 1870-1:2007
EN 1870-1:2007 (E) 2 Contents Page Foreword.4 Introduction.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.10 4 List of significant hazards.17 5 Safety requirements and/or measures.25 5.1 General.25 5.2 Controls.25 5.2.1 Safety and reliability of control systems.25 5.2.2 Position of controls.27 5.2.3 Starting.30 5.2.4 Normal stopping.31 5.2.5 Emergency stop.32 5.2.6 Mode selection.32 5.2.7 Speed changing/monitoring/detection for circular saw benches and dimension saws.33 5.2.8 Power operated adjustment of the saw blade and/or fence(s) on circular saw benches or dimension saws.34 5.2.9 Interlocking of guards, movements and functions.35 5.2.10 Failure of the power supply.35 5.2.11 Failure of the control circuits.36 5.3 Protection against mechanical hazards.36 5.3.1 Stability.36 5.3.2 Hazard of break up during operation.36 5.3.3 Tool holder and tool design.37 5.3.4 Braking.40 5.3.5 Devices to minimise the possibility or the effect of kickback.41 5.3.6 Workpiece supports and guides.48 5.3.7 Prevention of access to moving parts.54 5.3.8 Powered workpiece clamping.67 5.3.9 Safety appliances.68 5.4 Protection against non-mechanical hazards.69 5.4.1 Fire.69 5.4.2 Noise.70 5.4.3 Emission of chips and dust.71 5.4.4 Electricity.72 5.4.5 Ergonomics and handling.72 5.4.6 Pneumatics.73 5.4.7 Hydraulics.73 5.4.8 Electromagnetic compatibility.74 5.4.9 Laser.74 5.4.10 Static electricity.74 5.4.11 Errors of fitting.74 5.4.12 Supply disconnection (Isolation).74 5.4.13 Maintenance.75 6 Information for use.75 6.1 General.75 6.2 Marking.75 SIST EN 1870-1:2007
EN 1870-1:2007 (E) 3 6.2.1 Marking of the machine.75 6.2.2 Marking of riving knives.77 6.3 Instruction handbook.77 Annex A (normative)
Test for rigidity of building site saws.81 Annex B (normative)
Saw spindle dimensional tolerances.82 Annex C (normative)
Riving knife mounting strength test.83 Annex D (normative)
Riving knife lateral stability test.84 Annex E (normative)
Minimum dimensions of the machine table, extension table and insert.85 Annex F (normative)
Saw blade guard stability test.88 F.1 General.88 F.2 Separately from riving knife mounted saw blade guards.88 F.2.1 Saw blade guards with lead-in.88 F.2.2 Saw blade guards with in-feed rollers.89 F.3 Riving knife mounted saw blade guards.90 Annex G (normative)
Impact test method for guards.92 G.1 General.92 G.2 Test method.92 G.2.1 Preliminary remarks.92 G.2.2 Testing equipment.92 G.2.3 Projectile for guards.92 G.2.4 Sampling.92 G.2.5 Test procedure.92 G.3 Results.93 G.4 Assessment.93 G.5 Test report.93 G.6 Test equipment for impact test.93 Annex H (informative)
Use of well tried components.95 Annex I (normative)
Braking tests.96 I.1 Conditions for all tests.96 I.2 Tests.96 I.2.1 Un-braked run-down time.96 I.2.2 Braked run-down time.96 Annex J (normative)
Use of electronic components.97 J.1 General.97 J.2 SRECS.97 J.2.1 Components, Hardware.97 J.2.2 Safety related software.98 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.100 Bibliography.103
SIST EN 1870-1:2007
EN 1870-1:2007 (E) 4 Foreword This document (EN 1870-1:2007) has been prepared by Technical Committee CEN/TC 142 “Woodworking machines - Safety”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2007, and conflicting national standards shall be withdrawn at the latest by October 2007. This document supersedes EN 1870-1:1999. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the Machinery Directive and Outdoor Noise Directive. For relationship with EU Directives, see informative Annex ZA, which is an integral part of this document. EN 1870 Safety of woodworking machines — Circular sawing machines
consists of the following parts: Part 1: Circular saw benches (with and without sliding table), dimension saws and building site saws Part 2: Horizontal beam panel saws and vertical panel saws Part 3: Down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches Part 4: Multiblade rip sawing machines with manual loading and/or unloading Part 5: Circular sawbenches/up-cutting cross-cut sawing machines Part 6: Circular sawing machines for firewood and dual purpose circular sawing machines for firewood/circular saw benches, with manual loading and/or unloading Part 7: Single blade log sawing machines with integrated feed table and manual loading and/or unloading Part 8: Single blade edging circular rip sawing machines with power driven saw unit and manual loading and/or unloading Part 9: Double blade circular sawing machines for cross-cutting with integrated feed and with manual loading and/or unloading Part 10: Single blade automatic and semi-automatic up-cutting cross-cut sawing machines Part 11: Semi-automatic and automatic horizontal cross-cut sawing machines with one saw unit (radial arm saws) Part 12: Pendulum cross-cut sawing machines Part 13: Horizontal beam panel sawing machines Part 14: Vertical panel sawing machines Part 15: Multiblade cross-cut sawing machines with integrated feed of the workpiece and manual loading and/or unloading SIST EN 1870-1:2007
EN 1870-1:2007 (E) 5 Part 16: Double mitre sawing machines for V-cutting Part 17: Manual horizontal cutting cross-cut sawing machines with one saw unit (manual radial arm saws) Organisations contributing to the preparation of this European Standard include European Committee of Woodworking Machinery Manufacturers Association "EUMABOIS". The European Standards produced by CEN/TC 142 are particular to woodworking machines and complement the relevant A and B Standards on the subject of general safety (see introduction of EN ISO 12100-1:2003 for a description of A, B and C standards). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 1870-1:2007
EN 1870-1:2007 (E) 6 Introduction This document has been prepared to be a harmonised standard to provide one means of conforming to the essential safety requirements of the Machinery Directive and associated EFTA regulations. This document is a type "C“ standard as defined in EN ISO 12100-1:2003. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of other standards, for machines that have been designed and built according to the provisions of this type C standard. The requirements of this document are directed to manufacturers and their authorised representatives of circular saw benches (with and without sliding table), dimension saws and building site saws. They are also useful for designers. This document also includes provisions and examples of information to be provided by the manufacturer to the user. Common requirements for tooling are given in EN 847-1:2005. SIST EN 1870-1:2007
EN 1870-1:2007 (E) 7 1 Scope This document deals with the significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to stationary and displaceable circular saw benches (with or without sliding table and/or demountable power feed unit), dimensions saws and building site saws, hereinafter referred to as “machines”, designed to cut solid wood, chipboard, fibreboard, plywood and also these materials, if they are covered with plastic edging and/or plastic/light alloy laminates, when they are used as intended and under the conditions foreseen by the manufacturer. NOTE 1 For the definition of stationary and displaceable machine see 3.13 and 3.14. NOTE 2 Circular saw benches, and dimension saws are used for ripping, cross cutting, dimensioning and grooving. Building site saws are used for ripping, cross cutting and dimensioning. The requirements of this document apply also to machines designed for grooving with a width not exceeding 20 mm in one pass by using a milling tool. This document does not apply to: a) machines set up on a bench or a table similar to a bench, which are intended to carry out work in a stationary position, capable of being lifted by one person by hand. The bench can also be an integrated part of the machine if it consists of hinged legs which can be extended down; b) hand held woodworking machines including any adaptation permitting their use in a different mode, i.e. bench mounting. NOTE 3 Transportable motor-operated electric tools are covered by the requirements of EN 61029-1:2000 together with EN 61029-2-1:2002; hand-held motor-operated electric tools and saw benches to form an integrated whole with a hand-held motor-operated electric tools are covered by EN 60745-1:2003 together with EN 60745-2-5:2003. For the purpose of this document building site saws having a tiltable spindle are considered to be circular saw benches. This document is not applicable to circular saw benches (with and without sliding table), dimensions saws and building site saws which are manufactured before the date of its publication as EN. NOTE 4 Machines covered by this document are listed under A.1.1 of Annex IV of the Machinery Directive. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 294:1992, Safety of machinery — Safety distance to prevent danger zones being reached by the upper limbs EN 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 847-1:2005, Tools for woodworking — Safety requirements — Part 1: Milling tools, circular saw blades EN 847-3:2004, Tools for woodworking — Safety requirements — Part 3: Clamping devices SIST EN 1870-1:2007
EN 1870-1:2007 (E) 8 EN 894-1:1997, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 1: General principles for human interactions with displays and control actuators EN 894-2:1997, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 894-3:2000, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Pneumatics EN 1005-1:2001, Safety of machinery — Human physical performance — Part 1: Terms and definitions EN 1005-2:2003, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and component parts of machinery EN 1005-3:2002, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation EN 1005-4:2005, Safety of machinery — Human physical performance — Part 4: Evaluation of working postures and movements in relation to machinery EN 1037:1995, Safety of machinery — Prevention of unexpected start-up EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection EN 50178:1997, Electronic equipment for use in power installations EN 50370-1:2005, Electromagnetic compatibility (EMC) — Product family standard for machine tools — Part 1: Emission EN 50370-2:2003, Electromagnetic compatibility (EMC) — Product family standard for machine tools — Part 2: Immunity EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60439-1:1999/A1:2004, Low voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies (IEC 60439-1:1999) EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 60825-1:1994, Safety of laser products — Part 1: Equipment classification, requirements and user’s guide (IEC 60825-1:1993) EN 61310-1:1995, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:1995) EN 61496-1:2004, Safety of machinery — Electro−sensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified) EN 61508-3:2001, Functional safety of electrical/electronic/programmable electronic safety-related systems — Part 3: Software requirements (IEC 61508-3:1998 + Corrigendum 1999) SIST EN 1870-1:2007
EN 1870-1:2007 (E) 9 EN 62061:2005, Safety of machinery — Functional safety of safety-related electrical, electronic and programmable electronic control systems (IEC 62061:2005) EN ISO 3743-1:1995, Acoustics — Determination of sound power levels of noise sources — Engineering methods for small, moveable sources in reverberant fields — Part 1: Comparison method for hard-walled test rooms (ISO 3743-1:1994) EN ISO 3743-2:1996, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, moveable sources in reverberant fields — Part 2: Methods for special reverberation test rooms (ISO 3743-2:1994) EN ISO 3744:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994) EN ISO 3745:2003, Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision methods for anechoïc and semi-anechoïc rooms (ISO 3745:2003) EN ISO 3746:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:1995) EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 9614-1:1995, Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points (ISO 9614-1:1993) EN ISO 11202:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a workstation and at other specified positions — Survey method in situ (ISO 11202:1995) EN ISO 11204:1995/AC:1997, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a workstation and at other specified positions — Method requiring environmental corrections (ISO 11204:1995) EN ISO 11688-1:1998/AC:1998, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part l: Planning (ISO/TR 11688- 1:1995) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) EN ISO 13849-1:2006, Safety of machinery — Safety-related parts of controls systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 13849-2:2003, Safety of machinery — Safety-related parts of control systems — Part 2: Validation (ISO 13849-2:2003) EN ISO 13850:2006, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) ISO 7960:1995, Airborne noise emitted by machine tools — Operating conditions for woodworking machines HD 22.4 S4:2004, Cables of rated voltages up to and including 450/750 V and having crosslinked insulation — Part 4: Cords and flexible cables SIST EN 1870-1:2007
EN 1870-1:2007 (E) 10 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply. 3.1 Circular saw bench hand fed machine fitted with a single circular saw blade which is fixed during the cutting operation, and a horizontal table, all or part of which is fixed during operation
NOTE 1 The saw blade is mounted on a horizontal spindle below the table. The machine may have any of the following main features: a) facility for the saw blade to be raised and lowered through the table; b) facility to tilt the saw blade for angled cutting; c) machine frame below the table may be open (e.g. some building site saws), or closed in; d) additional, manually operated sliding table (not adjacent to the saw blade); e) facility for scoring; f) facility for grooving NOTE 2 Circular saw be
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