Scm Si 15 Wf nakup rabljenega (591)

Stanje: rabljeno, Tip SI 15 WF Dimenzije potezne mize: 2700 x 2300 mm Hod mize: 2600 mm Največja dolžina vodila žage: 900 mm Premer žaginega lista: 400 mm Nagib lista: 0–45 ° Dimenzije mize: 1150 x 630 mm Premer glavne gredi: 30 mm Glavni motor: 11 kW, 380 V Največja odprtina: 140 mm Transportne dimenzije: 2700 x 1800 x 1200 mm Ksdpfx Ajitvd Ish Djnc Teža: 820 kg Cena: 1.200 EUR (EXW Jonava, Litva)

Stanje: rabljeno, Leto izdelave: 1995, Voziček 1500 mm Širina reza: 1280 mm Višina reza: 80 mm 4 kW motor 380V Knsdpfx Ajxg Nawoh Doc

Stanje: rabljeno, Leto izdelave: 2004, Control system with PLC Panel height 10–60 mm Solid wood 15 mm Kjdpou Tyx Aofx Ah Djnc PVC/ABS mm 3 Feed speed up to 12–18 m/min Working height adjustable via PLC Adjustable panel support guide Side roller conveyor with idle rollers for panel support Rectifier group Roller holder plate Gluing group for EVA adhesive with pre-melter Edge pressing group Trimming group Pre-milling group with opposed motors Tiltable outfeed unit Corner rounding unit with 4 motors Edge scraper unit Glue scraper unit Oscillating brush group

Stanje: rabljeno, številka stroja/vozila: 007186, Type of applied edge: thin edge, thick edge Knsdsu T Tuwepfx Ah Doc Adhesive system: EVA Joint trimming: yes Multifunction unit: yes Top milling unit: yes Max. feed speed: 18 m/min Maximum panel thickness: 60 mm Working units: 10 units

Stanje: rabljeno, Leto izdelave: 2004, Žagin agregat: nagibni do 45° Dolžina vozička: 3200 mm Maks. premer žaginega lista: 450 mm Luknja žaginega lista: 30 mm Moč motorja: 7,5 kW Maks. širina reza: mm Upravljalna plošča: na višini oči Nastavitev višine: vnos prek tipkovnice Nastavitev naklona: vnos prek tipkovnice Prikaz kota nagiba: digitalno Prikaz širine reza: digitalno Podaljšek mize – dolžina: da Krajšanje na prečnem prislonu: 3200 mm Prikaz prečnega prislona: skala Nastavitev predrezovalnika: električno Predrezovalni list: PSV Zaščitni pokrov: da Zaklep v končnem položaju: da Avtomatska motorna zavora: da Hitrosti: 2500/3500/5000 o/min Opis: Višina reza pri žagam listu 450 mm, 150 mm Teža cca: 1180 kg Dimenzije: 3200 x 1800 x 1800 mm Premer odsesavnih priključkov: 1 x 80, 1 x 120 mm Lokacija skladišča: Nattheim Knedpfxswayx Tj Ah Dsc

Stanje: novo, Koda: N0750 Ksdpeh Hbhhofx Ah Dsnc Blagovna znamka: SCM Model: CLASS SI 400 EP - CE standard Elektronsko programirana krožna žaga z nagibnim žaginim listom - CE standard Tehnični podatki Premer žaginega lista: 400 mm Višina reza: 140 mm Programirano dvigovanje in nagibanje žaginega lista Predrezalna enota Moč glavnega motorja: 9,5 KM Moč motorja predrezalne enote: 1,7 KM Dolžina vozička: 3800 mm Gumbi za zagon/ustavitev integrirani v pomičnem vozičku Elektronski prikazovalnik pozicije za vzporedno vodilo z ročnim pomikom

Stanje: novo, Funkcionalnost: popolnoma funkcionalen, NOVA SI 400 MANUAL TILTING BLADE CIRCULAR SAW 109999 Standard safety regulations R10075 Nova SI 400 CE version 930731 Voltage 400 V EU 931201 Frequency 50 Hz 570321 Motor start/stop pushbuttons 570233 Squaring fence with 2 LCD position readouts for stops 570322 Squaring frame with CompeX device 570343 Digital display for readout on the parallel fence guide 570126 Ripping capacity on parallel fence 1500 mm 570133 Motor 9kW 50Hz (11kW - 60Hz) 570107 Eccentric clamp Kodpjqw U Adofx Ah Dsnc

Stanje: novo, Leto izdelave: 2025, HOLZKRAFT S 400 elite S 32 MA Professional Panel Saw, heavy-duty version with scoring unit and anodised aluminium sliding table. Art. No. 5504757 Machine equipped with: - Motorised height adjustment and tilting of the saw unit - Digital display for tilt adjustment - Integrated on/off switches for the motors on the crosscut carriage Standard features include a scoring unit with separate drive motor, adjustable from the outside - Smooth-running anodised aluminium sliding table - Cast iron saw unit with double trunnion guide (double cradle) and zero-point tilting - High machine weight ensures precision and smooth operation - 400 mm saw blade, cutting height 138 mm (also with scoring blade fitted) - Scoring blade standard - Pendulum blade guard standard - Aluminium sliding table 3200 mm with extra-wide carriage (330 mm) for increased support surface Knedei Dpgyspfx Ah Djc Technical Data Table dimensions: 940 x 560 mm Table height: 900 mm Cutting length: 3200 mm Sliding table dimensions: 330 x 146 x 3200 mm Max. cutting height 90°/45° with scorer: 138 / 98 mm Max. crosscut width left of saw blade: 3260 mm Cutting width with rip fence: 1270 mm Saw blade tilt: 90° - 45° Max. saw blade diameter: Ø 400 mm Scoring blade diameter: Ø 120 mm Main saw blade speed: 4000/5000 rpm Scoring saw blade speed: 9200 rpm Motor power 400 V / 50 Hz / S6 - 40%: 7 kW (9.5 HP) Scoring unit motor power: 0.55 kW (0.75 HP) Extraction port diameter: 120 mm Extraction port Ø for blade guard: 60 mm Machine available ex-stock Bitburg - free loaded - Special price for the stock machine Subject to prior sale

Stanje: rabljeno, Leto izdelave: 1988, Rabljeni stroj Leto izdelave: 1988 Oprema in tehnični podatki Žagin list nagiben 45° Dolžina reza 1450 mm Širina reza 1000 mm Premer žaginega lista 300 mm Maks. višina reza pri 90° = 100 mm Število obratov 4000 obr/min Priključek za odsesavanje 100 mm Mere: sledijo Teža pribl. 430 kg Razpoložljivost: takoj Knodpsxllwisfx Ah Dsc Lokacija: Flörsheim

Stanje: zelo dobro (rabljeno), Kataloška številka 7791 TEHNIČNI PODATKI - maks. premer glavnega žaginega lista s predrezilom: 350 mm - maks. višina reza: 105 mm Knsdsxpvk Iepfx Ah Djc - glavni žagin list nastavljiv gor/dol + kot - premer vretena: 30 mm - blokada vretena - s formatirnim vozičkom - dolžina reza na vozičku: 1430 mm - širina reza pri vodilu: 1000 mm - s stranskim vozičkom - s predrezilom - maks. premer predrezila: 80 mm - premer vretena: 20 mm - glavni motor: 5,5 kW - premer odsesovalnega priključka: 100 mm - dimenzija mize: 115x625 mm - dimenzije mize z razširitvijo in podaljškom: 2150x1105 mm - zaščita žaginega lista - 3 hitrosti vrtenja: 3200/4500/6000 obr/min - mere d/š/v: 2300x3350x1520 mm - teža: 746 kg Neto cena: 11900 PLN Neto cena: 2800 EUR po tečaju 4,25 EUR (Cene se lahko spremenijo zaradi dejavnikov valutnih nihanj)

Stanje: rabljeno, Leto izdelave: 2022, Premični voziček: 3200 mm Širina reza: 1000 mm CNC vzporedni prislon Predrezovalnik Kotni prislon z digitalnim prikazovalnikom Električno nagibanje in nastavitev višine Upravljalna plošča v višini oči Lokacija skladišča: Nattheim Knodpfoxnlbaox Ah Doc

Stanje: novo, Koda: N0764 Blagovna znamka: SCM Model: NOVA SI X - CE standard Krožna žaga z dvojnim nagibanjem rezila +/- 46° in tremi osmi s CNC-krmiljenjem – izvedba READY 3 UP – v skladu s CE standardom Opremljena z naslednjimi opcijami: - Zagonski gumbi vgrajeni v potezno mizo - Pravokotilni okvir s Compex napravo - Pravokotilno vodilo z dvema LCD zaslonoma za prikazovanje pozicije Kjded Dc Ecspfx Ah Djnc Tehnični podatki: Maksimalni premer žaginega lista z nameščenim zareznim žaginim listom: 400 mm Maksimalni izhod žaginega lista nad mizo pri 90°/+46°/-46°: 136/97/60 mm Širina reza na vzdolžnem vodilu: 1270 mm Pravokotilna zmogljivost: 3200 mm Trofazni motorji z močjo od: 7 (8) kW / 50 (60) Hz

Stanje: rabljeno, Leto izdelave: 2012, Funkcionalnost: popolnoma funkcionalen, dolžina rezanja (maks.): 3.200 mm, širina reza pri vzporednem vodilu: 1.270 mm, največja višina reza: 100 mm, premer žaginega lista: 315 mm, glavni premer žaginega lista: 315 mm, dolžina rezanja: 3.200 mm, vrsta vhodnega toka: trifazni, vhodna napetost: 400 V, - Leto proizvodnje: 2012 TEHNIČNI PODATKI: - Max. premer žage: 315 mm - Dolžina reza: 3200 mm - Max. višina reza do 100 mm Kjdpfx Ahsxdyvds Dsnc - Poševno rezanje: 0-45 stopinj - Obrati žage: 4000 obr./min - Moč motorja: 5 kW - Moč motorja predrezkarja: 0,9 kW - Max. vzporedni rez: 1270 mm - Teža: 800 kg

Stanje: zelo dobro (rabljeno), Leto izdelave: 2001, Formatna krožna žaga Proizvajalec: SCM Tip: SI 450 E Leto izdelave: 2001 Dolžina vozička: 3.200 mm Širina reza: 1.340 mm Višina reza: ca. 150 mm Višina reza pri 45°: 106 mm Moč motorja: 7,5 kW Maks. premer žaginega lista: 450 mm Število obratov: 2.350 - 5.200 obr/min Regulacija obratov: Variabilna – brezstopenjska Dvigi/spusti: Električen Nastavitev kota: Električna Predrezilo: Ne Kjdpfjv S Uvlox Ah Dsnc Motorna zavora: Da

Stanje: novo, Leto izdelave: 2025, New machine Year of manufacture: 2025 Features and Technical Specifications: Technical Specifications: Main saw blade diameter (mm): 550 Panel cutting capacity with extendable fence and sliding table: 3200 mm x 3200 mm Saw blade tilting range (degrees): 46 Max. saw blade cutting height at 90° (mm): 200 Max. saw blade cutting height at 45° (mm): 130 Saw blade rotational speed (rpm): 2500-3500-5000 Scorer unit speed (rpm): 8500 - Extraction nozzle diameter: - At the frame: 120 mm - At the saw blade guard: 100 mm Main motor power [S6 -40%] Hz50 kW: 7 Scorer motor power [S6 -40%] Hz50 kW: 0.9 Max. rip capacity with parallel fence (mm): 1000 Standard Equipment and Accessories: - Optimisation/Workflow control app for tablets: SCM Thundercut The app can be downloaded from the App Store or Play Store on tablets compatible with iPadOS or Android operating systems. Activation is via a QR code supplied with the machine. The app enables: * Management of machine fleet, materials, and panel inventory * Creation and editing of projects; importing projects from main furniture design software (file format "cpout"), importing cutting lists * Optimisation of cutting lists by selecting one or more solutions suggested by the app's integrated optimisation software * Accurate machine setup for each cut using simple, intuitive 3D sequence graphics that guide the operator step-by-step * Printing barcode labels for part identification via Bluetooth connection to compatible label printers Kodpfxexavrgo Ah Denc - 10-year warranty on sliding table carriage system - Maximum saw blade diameter: * Up to 450 mm with scorer blade installed * Up to 550 mm without scorer blade - eye-S 15" electronic control, complete with: * 15" touchscreen monitor * Direct control over the following axes with manual, semi-automatic, automatic, and incremental modes: - Main saw blade height adjustment - Saw unit tilt adjustment - Parallel fence positioning - Scorer height and lateral adjustment (the scorer is automatically raised to set position upon activation and lowered upon deactivation) * Operator assistance features for executing complex cuts * Storage of up to 1000 programs with associated images * Storage of up to 1000 different tools with associated images * Cut sequence management from preloaded parametric processing programs * Environment for creating and saving new sequenced work programs * Automatic acquisition of working dimensions from the Thundercut app * USB port * Network connection ready - Auxiliary functions of electronic control, including: * Automatic calculation of correct stop position on the longitudinal fence for angled panel processing with tilted saw blade * Automatic calculation of correct stop position for miter cuts on the worktable miter fence with or without tilted saw blade - Pivoting control panel above the table

Stanje: rabljeno, Leto izdelave: 2004, skupna dolžina: 3.600 mm, skupna širina: 1.800 mm, skupna višina: 1.750 mm, Weight: 970 kg Price: On request - Sliding table length [mm]: 3200 - Table width [mm]: 1040 - Min. saw blade diameter [mm]: 300 - Max. saw blade diameter [mm]: 400 - Manually adjustable axes: Scoring unit height - Options: Scoring unit - Spindle speed: - └ Min. spindle speed [rpm]: 3000 - └ Max. spindle speed [rpm]: 5000 - Scoring saw: - └ Scoring spindle speed [rpm]: 8500 - Year of manufacture: 2004 - Documentation available: No - Serial number: AB/166667 - Voltage [V]: 400 - Power consumption [A]: 18 - Transport dimensions: 3600mm x 1800mm x 1750mm (L x W x H) - Transport weight [kg]: 970kg Knedpfx Aexdlxkeh Dec - Transport packages [pcs]: 1 Financial Information VAT: The stated price is net, plus VAT VAT/margin taxation: VAT deductible for businesses Delivery and trade-in possible at any time for all industrial sector items Yorick Diebels

Stanje: rabljeno, Leto izdelave: 2010, Carriage length: 3200 mm Cutting width at rip fence: 1250 mm Cutting width at crosscut fence: 3200 mm Cutting depth: 150 mm Scorer: Yes Saw blade height adjustment: electric / position control Saw blade tilt adjustment: electric / position control Rip fence adjustment: electric / position control Saw blade angle display: digital Cutting height display: digital Rip fence display: digital Crosscut fence display: digital Saw blade diameter: 400 mm Speeds: 3 Motor power: 5.5 kW Motor brake: Yes, automatic Extraction connection: 80 mm and 120 mm Knedpfevadx Eox Ah Dec Machine length: 3500 mm Machine width: 2200 mm Weight: 1000 kg

Stanje: novo, Maximum cutting height at 90° (mm): 140 with 400 mm blade Maximum cutting height at 45° (mm): 97 with 400 mm blade Saw blade tilt (degrees): 45 Blade lifting and tilting: manual Saw blade speed (rpm): 3700 Scoring blade speed (rpm): 8500 Main motor power (kW) at 50 Hz: 9.0 with automatic star/delta switch Scoring unit power (kW) at 50 Hz: 1.3 Panel cutting capacity (mm): 3200 x 3200 Cutting width for parallel cuts (mm): 1270 Extraction port diameter (mm): 120, 80, 60 10-year warranty on the saw carriage guide system Edging carriage with anodized aluminium profile, guides made from hardened, ground, and riveted steel rails Height adjustment and tilting of the saw unit via handwheels on the machine front, with tilt indication via mechanical digital displays Crosscut fence for quick setting of the stop for mitre cuts: - telescopic stop with two flip stops and scale facing the operator - telescopic support - free-running roller for loading and unloading panels 2 reversible stops on the rip fence Kodpfjit I Sbox Ah Djnc Table extensions at the outfeed Parallel cut fence complete with: - cast iron support - micrometric adjustment and eccentric clamping - round guide made from ground steel, 45 mm diameter Scoring unit with independent motor, externally adjustable, and stops for easy blade positioning Emergency stop switch on the front Emergency stop at the side by the rip fence (CE version) Thermal overload protection switch Pendulum blade guard with integrated extraction, extraction port Ø 80 mm Automatic motor brake on main saw blade Lockable main switch 110 V auxiliary circuit C.E. Declaration of conformity Incl. digital positioning display for the rip fence

Stanje: zelo dobro (rabljeno), Leto izdelave: 2018, Krožna žaga z dvojnim nagibanjem rezila +/- 46° in tremi kontroliranimi osmi – različica READY 3 UP – CE standard opremljena z naslednjimi opcijami: Startni gumbi integrirani v pomični mizi Umerjevalni okvir z napravo Compex Umerjevalni prislon z 2 LCD zaslonoma za odčitek položaja Tehnični podatki: Maksimalni premer žaginega lista z nameščenim predrezilom: 400 mm Knjdpfexgbzmsx Ah Djc Njdmay Tmod Dc Ecebewl Maksimalen izhod žaginega lista iz mize pri 90°/+46°/-46°: 136/97/60 mm Širina reza na vzporednem prislonu: 1270 mm Umerjevalna zmogljivost: 3200 mm

Stanje: novo, Technical data: Max. saw blade diameter: 400 mm Min. saw blade diameter: 250 mm Saw spindle diameter: 30 mm Scoring blade diameter: 120 mm Scoring spindle diameter: 20 mm Scoring unit on separate motor Manual height adjustment of saw blade Tilting saw blade from 0° to 45° Manual tilt angle adjustment of saw blade Carriage length: 3,200 mm Carriage lock Knodpfxev S Uz Ij Ah Djc Worktable dimensions: 1,450 mm x 1,030 mm Table height: 920 mm Table extensions: 2x Rip fence Guard Emergency stop switch Power supply: 380 V Main motor power: 7 kW Overall dimensions: Length: 3,430 mm Width: 1,900 mm Height: 1,560 mm

Stanje: delavnici obnovljeno (rabljeno), Leto izdelave: 2001, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: AB141760, največja širina rezanja: 1.500 mm, širina reza pri vzporednem vodilu: 1.500 mm, moč: 7,5 kW (10,20 KM), dolžina pomične mize: 3.200 mm, Oprema: dozator, SCM panel saw, model SI 400 E Connection voltage: 380V Knsdpfx Ajtwp Epeh Dec Main motor: 7.5 kW Scoring motor: 0.75 kW Sliding table length: 3,200 mm Cutting width: 1,500 mm Table extension: 840 x 320 mm Parallelogram guard with wide and narrow hood Scoring unit with manual adjustment Electrical height adjustment Electrical tilting with Siko display Extraction port: 1x100 mm, 1x120 mm

Stanje: novo, Standard equipment and accessories - 10-year warranty on the saw carriage guide system - Saw carriage with anodized aluminium profile, guide made of hardened, ground and rolled-in steel tracks - Saw carriage length: 3200 mm - "READY" electronic control, 2-axis control (3rd axis available upon request) with: - Height adjustment and tilt of the saw unit (parallel fence control on request) - Tool data management with automatic correction of cutting height relative to the saw blade tilt angle - Manual, semi-automatic, and automatic modes with 99 storable work programs - Additional functions: calculator and operating hours counter - Framing table for quick positioning of the fence for mitre cuts - Outfeed table extensions - Cutting length on rip fence 1270 mm - 2-axis control with 99 programs Motor 7 kW 50 Hz (8 kW 60 Hz) - Motor with direct connection and push buttons - Three main saw blade speeds - Scoring unit with independent motorization, externally adjustable, and stops for easy saw blade positioning Safety/Protection - Emergency stop button at the front - Emergency stop button at the parallel fence area (CE version) - Thermal protection switch - Pendulum blade guard (CE version) with integrated extraction, extraction port diameter 80 mm - Pendulum blade guard with integrated extraction, extraction port 80 mm diameter - Automatic motor brake on main saw blade (CE version) - Lockable main switch - 110 V auxiliary circuit - CE declaration of conformity (CE version) Technical data Maximum cutting height at 90° (mm): 140 (with 400 mm blade) Maximum cutting height at 45° (mm): 97 (with 400 mm blade) Saw blade tilt (degrees): 45 Lifting and tilting of saw unit: programmable Saw blade speed (rpm): 3000 / 4000 / 5000 Scoring blade speed (rpm): 8500 Main motor power (S6 -40%) kW (HP), 50 Hz: 7 (9.5) Scoring unit power (S6 -40%) kW (HP), 50 Hz: 1.3 (1.7) Panel cuts: - with carriage 1600 (mm): n.a. - with carriage 3200 (mm): 3200 x 3200 Rip capacity (mm): 1270 Extraction port diameter: - frame (mm): 120 - saw blade guard (mm): 80 - riving knife (mm): n.a. Knsdpfx Ahevxr Sks Dec Net weight, base machine (kg): 1050 109999 Version according to safety regulations R10078 nova si 400ep CE version 930731 Voltage: 400V EU 931201 Frequency: 50 Hz 570343 Digital display for rip fence Complete with: - Digital display and magnetic tape 570133 Motor 9 kW 50 Hz (11 kW 60 Hz) with automatic star/delta switch, 9 kW 12 HP 50 Hz (11 kW 15 HP 60 Hz) 083202 Base frame 109993 MACHINE LANGUAGE: German

Stanje: zelo dobro (rabljeno), Table length 300 cm Ground clearance 105 cm Kjdpfx Asmmci Ujh Djnc Undercutter 5.5 kW motor

Stanje: novo, Saw unit swivels 46° to both sides. Programmable, electric saw blade adjustment. Control unit with electronic display for saw blade tilt and height. Gray cast iron saw unit ensures torsional rigidity and vibration-free operation. Easy panel handling thanks to large squaring frame with roller. Telescopic fence with 2 professional flip stops. Outstanding cutting precision – sliding table guided by a highly precise, time-proven ball contact system for smooth operation. Scoring unit features its own drive and is easily adjustable from outside. Saw unit accommodates saw blades up to 400 mm diameter. Scoring blade diameter: 160 mm. Two-position manually adjustable saw blade pendulum guard. 3-axis control. Motorized parallel fence with electronic position control. Includes: - Position display via encoder Kjdpfxod Akygs Ah Donc - Adjustment via ball screw spindle - Stepless setting via switch or automatic positioning system - Incremental adjustment capability - Swiveling fence retraction below table - Cutting width 1270 mm - Programmed movement of motorized saw unit adjustment and tilting UP version: - Swiveling operator panel for maximum flexibility X version: - Compex miter fence for fast, precise miter cuts with automatic length compensation (length adjustment) - Outrigger with angle-adjustable telescopic crosscut fence - Optional degree scale division (Art.-No.: 5510403) - Longitudinal fence with 2 LCD position displays Options included: - Version with max. sliding table travel of 3200 mm - Integrated main and scoring blade start/stop switches on the squaring frame - Squaring frame with CompeX feature - Version “READY 3 UP” - 2 cutting speeds (3500/5000 rpm) Extraction port diameter: 120 & 80 mm Main motor: 7.0 kW, 400 V, 50 Hz Squaring frame length: 1200 mm Squaring frame width: 650 mm Sliding table length: 3200 mm Sliding table width: 360 mm Cutting width with parallel fence: 1270 mm Max. crosscut width left of blade: 3260 mm Saw blade tilt: -46 to +46° Max. cutting height 90°: 136 mm Max. cutting height 45°: 97 mm Max. cutting height -45°: 60 mm Main saw blade diameter: 400 mm Scoring saw blade diameter: 160 mm

Stanje: novo, Equipment: Knjdecrnm Nopfx Ah Doc 5-axis electronic control Swivelling control panel above the table Electronic adjustment of the scoring unit Automatic rip fence with screw adjustment and linear ball bearing guide On/off switch integrated in the trimming carriage “Quick Lock” squaring frame Longitudinal fence with LCD displays “Full Support” Sliding carriage with curved contact surfaces – 10-year warranty! Telescopic arm with linear guide with ball bearing carriage Technical Data: Main saw blade diameter mm: 550 Scoring blade diameter mm: 120 Panel cutting capacity with extendable fence mm: 3200x3200 Saw blade tilting range degrees: 0 +46 Max. saw blade cutting height at 90° mm: 200 Max. saw blade cutting height at +45° mm: 130 Saw blade speed rpm: 2500, 3500, 5000 Scoring unit speed rpm: 8500 Dust extraction port diameter mm: 120 & 100 Main motor power Hz 50 / kW: 7.0 Scoring unit power Hz 50 / kW: 1.3 Cutting width with rip fence mm: 1500 Including the following OPTIONS: 570335 "Pro-Lock" system for quick clamping of the main saw blade with tool-free quick adjustment of the riving knife