Used Edgebander for sale (821)

Condition: used, Year of construction: 2023, functionality: fully functional, For Sale: OTT Unimatic 25.8F Edgebander with Ligmatech ZHR 15 Return System We are selling an OTT Unimatic 25.8F edgebanding machine combined with a Ligmatech ZHR 15 return conveyor table. The units are sold exclusively as a complete set (line). Key Features and Customizations: Custom Grooving Units: The machine has been upgraded with two additional milling units—one for lateral grooving from the front and one for vertical grooving from the top. It was primarily used for the production of interior door frames. Stability Upgrades: Custom-built stabilization rollers have been added to the interior side to ensure precision when processing narrow workpieces. Recent Maintenance: Last year, the glue application unit (including the roller) was completely replaced with a new one. The track pads (shoes) were also replaced. Condition and Dimensions: Condition: The machine is rarely used but has been regularly maintained and serviced by TIBO. It is currently in full working order and available for testing on-site. Bodpfsygl A Aox Agkeld Dimensions: Total line length is 11m, width is 2m. Serious inquiries only, please.

Condition: good (used), Year of construction: 2015, functionality: fully functional, edge thickness (max.): 12 mm, ENGLISH: Heavy duty edgebander OLIMPIC (SCM Group) in rich configuration suitable for custom made and series production. Machine is equipped with aggregates with servomotors (ABS R1+R2mm + thin edge + solidwood). Bjdpfx Aewxt Tbsgkold Model: Olimpic K800 TERL Manufacturer: SCM Group Production year: 2015 State: good Edgebanded edges: 238.800 meters Main technical parameters: - feeding speed: 12/18 m/min. (including rounding) - panel thickness: 10-60 mm (including rounding) Equipment and configuration of the machine: - control panel with LCD touch screen STARTOUCH - internal lightning of working area - automatic lubrication of the feeding chain - electronic top pressure adjustment - glue pot with quick change of the glue color Working units: - antiadhesiv spray - pre-milling unit (2x DIA cutter) - glue pot with roller "VC/1000" (glue pot with quick-release system) - pressure rollers (4 pcs) with timed intervention - 2 motor end cutting unit "K/SEL" with pneumatic tilting of the blades - radius trimming unit "RI/800" R1mm + thin edges + solid wood (12mm) (3 position pneumatic kit) - 2 motor rounding unit "ROUND K MULTI EDGE" R2mm + thin edge (each motor has: 2 electronic axis with servomotor) - radius edge scrapers "RAS/S 2P" MULTI-EDGE R1+R2mm (each unit has: 2 electronic axis with servomotor) - cleaning spray - glue scrapers "RCA/2C" - brushes"SP/F"

Condition: excellent (used), Year of construction: 2010, Single-sided edge banding machine for processing straight workpiece edges as well as applying and post-processing various edge materials in both longitudinal and transverse feed directions. OVERVIEW OF THE EQUIPMENT CONFIGURATION: - POWER CONTROL PC 20+ electronic control - PU upper pressure rollers instead of rubber rollers - Workpiece gap optimization - Infeed fence extension by 300 mm with additional device for laminate overhang - JOINTING MILLING UNIT 2 x 2.2 kW 200 Hz - GLUING UNIT A12 with automatic edge feeding – Quickmelt application unit – Standard application unit interchangeable for PU glue - Pressure zone with motorized adjustment - END TRIMMING UNIT BEVEL/STRAIGHT 2 x 0.35 kW - PNEUMATIC ADJUSTMENT END TRIMMING BEVEL/STRAIGHT - PNEUMATIC 2-POINT ADJUSTMENT END TRIMMING - PRE-MILLING UNIT 2 x 0.55 kW counter-rotating – with PNEUMATIC 2-POINT ADJUSTMENT (flush and radius/chamfer milling) – Program control for side tracing rollers stepless and edge thickness – Multi-roller tracing - MULTIFUNCTION PROFILE MILLING UNIT 2 x 0.4 kW with exchange system and quick-change heads - PROFILE SCRAPER WITH QUICK-CHANGE HEADS Bljdpfxjx S I Iyj Agkod - Special tracing for profile scraper - PNEUMATIC ADJUSTMENT SCRAPER - GLUE JOINT SCRAPER - POLISHING UNIT - RELEASE AGENT SPRAY UNIT WORKPIECE - CLEANING AGENT SPRAY UNIT WORKPIECE

Condition: good (used), Year of construction: 2008, Biesse STREAN B1/8.0 Single-Sided Edgebander, Year 2008 - Code 0000015: Y-axis CNC with infeed guide - Code 0000011: Right-angle panel inserter - Code 0000517: Automatic lubrication C1 - Code 0000017: Parallelogram workpiece support 5.5–8.5 - Code 0000439: B1 installation kit with panel return device - Code 0000136: Liquid jet application unit - Code 0000669: RT20 pre-milling unit, 2×3.5 kW, 9000 rpm - Code 0000336: Additional pair of diamond cutters, H=60 - Code 0000469: SP20 glue spreading unit - Edge thickness: 0.3–3 mm - Bswyjukh Tqjhhpkswt (term seems corrupted, clarification needed) - Wood thickness: 20 mm - Panel thickness: 10–60 mm - Code 0000244: Y-axis CNC for pressure zone - Code 0000682: Two-position edge magazine for SP10 and SP20 - Code 0000144: Additional glue pot - Code 0000367: IT90-S end trimming unit, 2×0.3 kW, 12000 rpm - Code 0000704: Solid wood edge kit up to 20 mm thickness for IT90 - Code 0000711: 3-position pneumatic kit for IT90 - Code 0000151: RS10 flush trimming/pre-milling unit – straight tool, L=20, 2×1.3 kW, 12000 rpm Bljdpfx Asxala Tjgkjd - Code 0000901: Increased straight tool (L+30, solid wood) for RS10 - Code 00000152: 2.4 kW motors for RS10 flush trimming unit – straight tool L=30 - Code 00000536: Automatic 2-position adjustment for RS10 - Code 00000158: RF=40 angle trimming unit, 25° bevel, R=1.5/2/3 mm, 2×0.65 kW, 12000 rpm - Code 0000651: Copying shoes for RF10-RF30-RF40 groups - Code 0000579: AR30 multifunction corner rounding unit, R=2 mm - FAST system with 2 pre-selection positions via control panel - 2×0.35 kW, 12000 rpm - Code 0001017: 4-position pneumatic system for AR30 - Code 0000165: RB10 edge scraper group, R=2 mm - Code 0000652: Copying shoes for RB10-RB30-RB40 groups - Code 0001004: RC20 glue scraper group - Code 0000171: SZ30 superimposed oscillating brush group, 2×0.18 kW, 1400 rpm - Code 0000989: Liquid jet application kit for SZ30, SZ60 - PH10 edge band pre-heater WITHOUT PANEL RETURN

Condition: used, machine/vehicle number: 006719, Type of edging: Thin edge, Thick edge, Veneer Bledpfjq Awlisx Agkod Gluing System: EVA Hotmelt Premilling Unit: yes Corner Rounding Unit: yes Max feed speed: 11 m/min

Condition: used, machine/vehicle number: 007134, Type of edging: Thin edge, Thick edge, Solid wood Gluing System: EVA Hotmelt, Hot Air Premilling Unit: yes Bedpfx Ajt Hmtzegkeld Corner Rounding Unit: yes Grooving Unit: yes Max feed speed: 25 m/min Maximum panel thickness: 60 mm Operating Units: 10 nr

Condition: used, machine/vehicle number: 008018, Type of edging: Thin edge, Thick edge, Solid wood Gluing System: EVA Hotmelt, PUR Bledpfjwv Dfcjx Agkjd Premilling Unit: yes Corner Rounding Unit: yes Max feed speed: 20 m/min Maximum panel thickness: 60 mm Operating Units: 7 nr

Condition: used, machine/vehicle number: 006574, Type of edging: Thin edge, Thick edge, Solid wood, Veneer Gluing System: EVA Hotmelt Premilling Unit: yes Corner Rounding Unit: yes Bledpfovxxuxex Agkjd Max feed speed: 25 m/min Maximum panel thickness: 60 mm Operating Units: 7 nr

Condition: used, machine/vehicle number: 007227, Position 1: Single Edgebanders HOMAG + LIGMATECH-KAL 310 + ZHR 05 Position 2: Panel Return Systems HOMAG + LIGMATECH-KAL 310 + ZHR 05 Bledpfx Agjwuuc Askod

Condition: used, Year of construction: 2002, functionality: fully functional, HOMAG Optimat KL79 A20/S2 (2002) – Full Configuration The edge banding line is in satisfactory working condition, fully operational and ready for production. Installed Units: • A20/S2 gluing station (edge thickness up to 20 mm) • Edge feed magazine • Front/rear end trimming units (two saw modules) • Top and bottom trimming units • Corner rounding units (two heads) • Profile scraper units (top/bottom) • Glue joint scraper • Buffing/polishing units • Pneumatic control and vacuum extraction system Technical Data (from manufacturer specifications): • Feed speed: 18–24 m/min • Edge thickness: 0.3–20 mm • Workpiece thickness: 12–60 mm • Minimum workpiece width: 55 mm (22 mm thickness) / 100 mm (60 mm thickness) • Machine length: 10,115 mm Bjdpfsycg D Tox Agksld • Weight: ~6,200 kg • Power supply: 400 V, 50/60 Hz • Compressed air: 8 bar

Condition: used, machine/vehicle number: 008367, Type of edging: Thin edge, Thick edge, Solid wood Gluing System: EVA Hotmelt Premilling Unit: yes Corner Rounding Unit: yes Max feed speed: 12 m/min Maximum panel thickness: 60 mm Operating Units: 7 nr Bedpex Swfhefx Agkjld

Condition: new, Year of construction: 2026, functionality: fully functional, The Nanxing NB875A is a professional 2-in-1 edge banding solution that combines straight edge banding and Soft Forming technology in a single machine – perfect for handleless doors and modern furniture fronts. Equipped with a complete set of pre-milling, heating, pressing, and finishing units, NB875A delivers flexibility, high productivity, and premium edge quality. Its fully automated control system and intuitive software allow fast switching between 14 different profiles (full C, left/right J, concave center, concave left/right, W-shaped, diamond profiles, etc.). Key Highlights Multi-functional machine for both straight and softforming edge banding in one pass. 14 profiles available, automatically switchable via servo control. Energy-saving function – automatic standby mode after idle time. Advanced industrial control PC with 24” touchscreen, online connectivity, optional barcode reader. Fully enclosed machine with sound-absorbing material for low-noise operation. CE certified, international brand electrical components. Working Units & Equipment Pre-milling unit with 2 electro-pneumatic motors, H35 mm cutters. 2 sets of J & C profile milling units (4 motors – 7.5 kW + 3.5 kW) with automatic switching. Panel pre-heating + 2 glue application units (panel + edge). Softforming & pressing station with precision steel rollers and band pre-heating system. Servo-driven tape feed & pneumatic end trimming (Ø180×3.5×60T saws, 12,000 rpm). Rough & fine trimming units, radius scraping & flat scraping. Double buffing units for a perfect glossy finish. Independent dust extraction hoods (9 × Ø125 mm) for all processing units. Automatic lubrication system and full safety protection (panel thickness detection, feed monitoring, E-STOP). Technical Specifications Minimum panel size: 300 × 150 mm (central concave ≥ 400 mm) Panel thickness: 18 mm (straight), 18–25 mm (softforming) Edge band thickness: 0.5–0.6 mm (softforming), 0.5–1.2 mm (straight) Feed speed: 8 m/min Power supply: 380V / 50Hz Air pressure: 0.7 MPa Installed power: 68 kW Net weight: approx. 6,000 kg Bledpfx Asxcwrmogked Machine dimensions: 11,015 × 1,000 × 1,940 mm Applications Production of handleless doors for kitchens, wardrobes, and bathroom furniture Complex edge banding operations in medium and large-scale production Premium edge finish with invisible glue line Advantages for Manufacturers Maximum versatility: one machine for all straight & softforming edge banding profiles. Superior finish: smooth edges, perfect glue adhesion. High efficiency: automatic operation, quick profile changeover. Cost reduction: fewer machines required, minimal downtime.

Condition: used, Year of construction: 1999, Holz-Her SPRINT 1411 edgebander Description Bedpjw Ebrxjfx Agksld Workpiece thickness min./max. 6/45mm Automatic edge feeder (coil up to 5mm) Workpiece min. 60mm Workpiece length min. 180mm Cartridge glue system (short heat up time 2-3 min.) End trimming unit Flush trimming unit Scraping unit (flat) Buffing (brushing) unit CE (Despite our great care all changes, mistakes in technical data, prices and all information is subject to (typing) errors. No guarantee on printed data! Availability subject to prior sales). (Alle Änderungen und Irrtümer in den technischen Daten, Angaben und Preisen vorbehalten! Keine Garantie auf gedruckte Daten!. Verfügbarkeit vorbehaltlich Zwischenverkauf).

Condition: used, Year of construction: 2016, Vitap Eclipse Edgebander for round shaped, curved workpieces Semi-automatic edge banding machine for large round or curved workpieces with a panel thickness between 10 and 60 mm and a belt thickness between 1 and 3 mm. The 60 mm height is only possible with an edge banding thickness of 1 mm. If the edge band is thicker, it depends on the quality of the band and must be tested beforehand in connection with the cutting unit. Description; Two copy rollers for the shape of the workpiece to be scanned Gluing station Glue tray with a capacity of 1 kg Two 800W heating elements with electronic temperature display via the PLC Glue application via glue roller Glue tray made of aluminum for heat distribution Blodpowgb Hxjfx Agksd Glue supply can be adjusted by means of a button Automatic cutting unit for edge banding material on the roll from 3 to 45 mm Aggregate is activated by a sensor for closed edge tape with a perfect connection or by an encoder if only 1 side is pasted Laser system for length determination, no pre-measurement necessary On-off capability for throughput Height-adjustable table for narrow panels On-off capability for milling aggregate Two copy rollers for the shape of the workpiece to be scanned Milling unit equipped with 2 x 0.5 kW (15000 rpm high frequency) with top, bottom and front copy rollers Milling unit equipped with blades R=2, Phase 15°, D=69, Z=6 Large panel turntable with vacuum to hold product (All changes, mistakes in technical data, info and prices reserved. Availability subject to prior sales. No guarantee on printed data!) (Alle Änderungen und Irrtümer in den technischen Daten, Angaben und Preisen sowie Zwischenverkauf vorbehalten! Keine Garantie auf gedruckte Daten!) Best woodworkingmachines from the Netherlands Holland Die besten holzbearbeitungsmaschinen aus die Niederlande De beste gebruikte machines uit Nederland

Year of construction: 1994, condition: used, functionality: fully functional, Edgebander HOLZ-HER Accord 1466 for sale! Available immediately! Blsdpfxoiffpme Agksd Year of manufacture 1994 Technical specifications max. Edge band thickness: 30 mm max. Workpiece thickness: 60 mm (min. Workpiece thickness: 6 mm) min. Workpiece length: 140 mm min. Workpiece width: 60 mm Type left-side machine Machine length 7520 mm Machine depth 970 mm

Condition: good (used), Year of construction: 2017, NUMERICALLY CONTROLLED EDGE BANDER WITH PRE-MILLING (SPINDLES) & CORNER ROUNDING UNIT Brand: SCM Model: K 360 HP-T-ER1 Serial No.: AH/120944 Ref: 123304 Year: 2017 WORKING CAPACITIES: - Panel height to be machined: 8 - 58 mm Thickness 10 to 45 mm when using rounding unit - Panel length for edgebanding: 210 to 2500 mm - Minimum panel width to be machined: 90 to 1100 mm - Edge thickness in coil: 0.4 to 3 mm without rounding max 3 mm with rounding unit - Edge thickness in strips: max 6 mm without rounding max 3 mm with rounding unit - Edge width: panel thickness + 2 mm each side - Feed rate: 11 m/min - Minimum gap between panels: 600 mm - Panel overhang beyond the transfer chain: 30 mm MACHINE CONFIGURATION: - StarTouch control Bledpfx Agjrx S Ipeksd - Prepared for barcode reader - Reel holder table Ø800 mm - Front extension table - Easy size: digital positioning of infeed fence and panel passage height - Anti-adhesive spray unit - Pre-milling unit (RT-V trimmer) 12,000 RPM - Infrared panel preheating at infeed - Glue application unit (VC-VM) with interchangeable glue pot for granules, capacity: 1 kg. Heating time: 12 minutes Pneumatic pre-cut guillotine Digitally positioned pressure station with 3 rollers (1 roller powered and with timer) - Trimming unit (end cutting) tiltable 0-20° 12,000 RPM - Top/bottom flush trimming unit with digital positioning and copying system. 2 mm radius (or chamfer) router 12,000 RPM - Corner rounding unit R2 mm, 12,000 RPM, digital positioning - Top/bottom R1 & R2 mm radius scrapers with digital positioning - Top/bottom straight scrapers - Edge finishing spray device (Nebulizer) OTHER FEATURES: - Pre-milling group motors: 2x2 kW - End trimming motors: 2x 0.19 kW - Lift/lower motor: 0.30 kW - Feed motor: 1.1 kW - Flush trimming group motors (milling): 2x 0.65 kW - CE Marked - Lockable isolator, emergency stop buttons - Power supply: 380 V, three-phase, 50 Hz - Pneumatic supply: 8-10 bar max, dry air - Extraction: 1x Ø100 mm and 5x Ø80 mm Spindles: 780 m³/h Edge trimming: 360 m³/h Scrapers: 2x360 m³/h Max. footprint in working order: 10.80 x 2.40 m Dimensions for transport (LxWxH): 4.85 x 1.20 x 1.70 m Weight: 1568 kg Machine supplied with mounted tools, manual, spare parts list and diagrams.

Condition: used, Year of construction: 2007, Used Automatic Edgebander for sale! Manufacturer: SCM Model: K1000 Year of manufacture: 2007 Status: dismantled and ready for transportation immediately! Location: Lithuania Equipment and technical specifications Edgeband thickness max 8 mm Blodpfoya Tv Rex Agksd Panel thickness max 50 mm Thickness of coiled edgeband max 3 mm Workpiece length min 65 mm Feedrate max 18 m/min

Condition: reconditioned (used), Year of construction: 2014, functionality: fully functional, HOLZ-HER Edgebanding Machine ACCURA 1558 performance with BELT BRIDGE and intelligent equipment package for edge thicknesses up to 15 mm. Easy program selection and tool adjustment via the 18.5" color touchscreen (16:9). Short heating time for the GlueJet (GJ 301 automatic) adhesive system—around 2 to 3 minutes depending on adhesive type and ambient temperature. Always fresh glue thanks to the GlueJet adhesive application system and glue cartridges. Swapping PUR adhesive and cleaning the system is effortless and takes just a few minutes. Axis adjustment via high-precision, repeatable servomotors. Special configuration for protective film materials, such as high-gloss and super-matt! One of the absolute highlights of this machine is the multifunction package, which excels with businesses processing a wide variety of edges. The DIA tools are multi-stage and can switch between radius and chamfer as needed—from the longitudinal milling unit to corner copying and the profile scraper blade. The extendable workpiece support and the extended infeed area with air cushion table provide support for large workpieces. A guidance system assists in feeding small workpieces into the machine. Edge thickness (roll material): 0.4 – 3 mm (material dependent) Edge thickness (strip material): 0.4 – 15 mm Workpiece thickness: 8 – 60 mm Workpiece width: min. 65 mm Feed speed: 10 – 25 m/min Glue application with GlueJet in EVA and PUR quality, minimal effort required. Processes all standard edge types, including high-gloss & super-matt, as well as solid wood edges up to 15 mm. Motorized adjustment of the infeed fence Narrow part guidance system Prepared for connection to a RETURN system Motorized pressure bridge with top belt drive Multifunctional units for rapid changeover between radius, flush, and chamfer processing Spraying units, vertical & horizontal and much more. Delivery, installation, and commissioning of the machine can be offered directly by us for an additional charge. The machine is currently located at our delivery warehouse in Gratwein, Austria. In the event of discrepancies between the German version and any foreign-language version, the German version shall prevail. Our terms and conditions can be found on our website at holzher.de/en/terms-and-conditions. Bodpjyfgrpjfx Agksld

Condition: used, machine/vehicle number: 008244, Type of edging: Thin edge, Thick edge Gluing System: EVA Hotmelt, Laser Premilling Unit: yes Corner Rounding Unit: yes Max feed speed: 25 m/min Maximum panel thickness: 60 mm Blsdpfex Swgfex Agkjd Operating Units: 8 nr

Condition: used, machine/vehicle number: 008350, Type of edging: Thin edge, Thick edge, Solid wood Gluing System: PUR Premilling Unit: yes Corner Rounding Unit: yes Max feed speed: 20 m/min Maximum panel thickness: 60 mm Operating Units: 7 nr Bjdjx A Tgyepfx Agkold

Condition: used, Year of construction: 2015, functionality: fully functional, - Year of manufacture: 2015 - Made in Bulgaria - Operating manual and CE certificate available TECHNICAL SPECIFICATIONS: – Workpiece height: 8–45 mm – Minimum workpiece length: 100 mm – Minimum workpiece width: 100 mm – Edge thickness: 0.4–3.0 mm – Feed speed: 9.5 m/min – Cutting unit - motor power: 1 x 0.27 kW – Milling unit: 2 x 0.35 kW – Milling unit: 12,000 rpm – Corner rounding unit - minimum workpiece length: 250 mm – Corner rounding unit - motor power: 1 x 0.35 kW – Corner rounding unit: 12,000 rpm – Pre-milling unit: 1 x 1.1, 1 x 0.75 kW – Pre-milling unit: 12,000 rpm – Edge cutting unit: – Glue application unit: Bljdew H Ryuopfx Agked – Polishing unit - motor power: 2 x 0.18 kW – Polishing unit: 2,800 rpm – Extendable support with rollers: – Extraction port diameters: 120 mm – Compressed air pressure: 6.5 bar – Total power: 6.7 kW – Dimensions (L x W x H): 4,130 x 1,220 x 1,470 mm – Weight: 1,180 kg

Condition: used, Year of construction: 1992, Used machine Year of manufacture: 1992 Max. workpiece height approx. 40 mm Min. workpiece length approx. 250 mm Min. workpiece width approx. 70 mm Feed rate approx. 11 m/min Ready for operation in approx. 4-5 min Power consumption approx. 11 kW With quick-heating glue reservoir Pneumatic edge trimming up to 3 mm With cross-cut saw for edge thickness up to 5 mm With milling station, optionally equipped with combined reversible blade cutters for radius, straight and chamfer milling Outrigger, foldable and extendable to the front Bsdpfxjx Rr Dvo Agkjld With chassis L x W x H: 3600 x 1400 x 1200 mm Weight approx. 670 kg Availability: short-term Location: Flörsheim

Condition: used, Year of construction: 2006, Homag Optimat KAL310/6/A3/S2 Edgebanding Machine, 6-Position Tape Cart, Quickmelt Glueing Unit QA3, Approx. 1100mm Wide Machine Roller With Conveyor, Tilting Outfeed Conveyor to Return Belt Conveyor, Windows Based Control. Serial No. 0-200-15-4533 (2006). Country of Origin: Germany Bedpfsyil Arjx Agksld A charge of £550 for dismantling and loading onto suitable transport will be automatically added to your invoice should you be successful in purchasing this item. Blocking and securing will be at the cost of the purchaser.

Condition: excellent (used), Year of construction: 2005, functionality: fully functional, workpiece height (max.): 55 mm, edge thickness (max.): 12 mm, height adjustment type: pneumatic, tilt adjustment saw blade: 10 °, We are offering this very well-maintained HOLZ-HER SPRINT 1310 edge banding machine, year 2005, including Ott Rondomat. Blodsycgabopfx Agksd Manufacturer: HOLZ-HER Model: SPRINT 1310 Year of manufacture: 2005 For sale: Service-maintained Holz-Her Sprint 1310 edge banding machine Fully functional! Heavy-duty version – edge thickness 0.4 – 12 mm PLC screen control Fully automatic edge magazine for rolls and strip material Gluing station with cartridge and PU bonding Automatic tracing nozzle Workpiece height 6-55 mm End trimming unit Adjustable mitre from 0-10° on the trimming saws Milling unit for flush trimming up to 12 mm and radius milling Scraper unit for chamfer and radius with 2 pneumatically operated scraper holders Surface scraper unit – finishing Including Ott Rondomat for edge processing

Condition: reconditioned (used), Year of construction: 2010, Voltage 400V 3~ 50Hz 7.22kW Control panel with LCD display and keypad Jointing unit with 2 counter-rotating diamond cutters Corner rounding unit for edge faces Manual unit adjustment Edge thickness 0.4-5.0 mm (optionally 8 mm) Workpiece height 8-60mm Feed speed 11 m/min 3 free slots for finishing units Blodeyf I T Uopfx Agked Edge feed for coil and strip material Scraper knife