Used Sac P4 & F5 for sale (1,611)

Condition: used, Year of construction: 1993, ANGULAR PROFILING MACHINING CENTER Brand: SAC Model: P4 Serial number: 9304 Year: 1993 Model: F5 Dodpfxorx Tcgo Aa Hswb Serial number: 93030 Year: 1993 Machines visible in our workshops CHARACTERISTICS : - Cutter rotation speed: 6000 rpm

Condition: ready for operation (used), Year of construction: 2000, functionality: fully functional, sheet thickness (max.): 3 mm, working length: 2,500 mm, TECHNICAL DETAILS Sheet thickness with tensile strength of 410 N/mm² max.: 2.00 mm Sheet thickness with tensile strength of 600 N/mm² max.: 1.25 mm Sheet thickness with tensile strength of 265 N/mm² max.: 3.00 mm Minimum sheet thickness: 0.50 mm Length of the notched plate at the inlet max.: 2,700 mm Width of the notched plate at the inlet max.: 1,500 mm Rotatable diagonal of the notched plate max.: 2,700 mm Bending length max.: 2,500 mm Djdpszv Rc Sefx Aa Howb Clearance for bending above the work table max.: 127 mm MACHINE DETAILS Processor: Intel Pentium III, 500 MHz RAM: 128 MB SDRAM Graphics memory: 4 MB SGRAM Hard disk capacity: 9.1 GB CD-ROM drive: 600 MB Floppy disk drive: 3.5 inch, 1.44 MB Network cards: 2 Screen diagonal: 17 inches Voltage: 400 V Frequency: 50 Hz Number of phases: 3 Rated power: 38 kW Rated current: 64 A Switching capacity of the main switch: 40 kA Further technical details can be found in the attached documents.

Condition: used, Year of construction: 2001, functionality: fully functional, filter area: 43 m², volume flow: 7,650 m³/h, negative pressure: 2,200 Pa, rotational speed (min.): 2,800 rpm, We are selling our bag filter, type Nestro NAsf5/3. The unit is available for dismantling and collection at our premises. Due to a new acquisition with integrated heat recovery, this unit is now surplus to our requirements. Dwedpfszt Ruvex Aa Hsb

Condition: used, Year of construction: 2012, The SAC F4TL window manufacturing centre is designed to meet the requirements of modern window production. It enables highly efficient, high-quality manufacturing with minimal setup time and without the need for tool changes. After machining, the workpiece is automatically returned to the operator. Dwedszl D Dnopfx Aa Hjb SAC F4TL CNC Window Manufacturing Centre – Machining Units Tenoning Side 1. Tenoning carriage 2. End trimming unit 3. Tenoning spindle Profiling Side 4. First profiling spindle 5. Second profiling spindle 6. Glazing bead notching unit 7. Hardware slot milling unit (optional) Feed System Tenoning Side 1. Tenoning carriage • Machining speed: 3–10 m/min • Return speed: 45 m/min • Table size: 290–955 mm • Motor power: 1.1 kW • Fence tilting angle: ±60° 2. End trimming unit • Saw blade diameter: 400 mm • Bore diameter: 30 mm • Motor power: 3 kW 3. Tenoning spindle • Vertical adjustment speed: 5 m/min • Spindle diameter: 50 mm • Spindle length: 620 mm • Vertical travel: 565 mm • Motor power: 7.5 kW • Maximum tool diameter: 350 mm Profiling Side 4. First Profiling Spindle • Spindle vertical adjustment speed: 5 m/min • Spindle diameter: 50 mm • Spindle length: 320 mm • Vertical spindle travel: 295 mm • Horizontal spindle adjustment: 60 mm • Spindle rotation direction: left/right • Motor power: 7.5 kW • Maximum tool diameter: 240 mm 5. Second Profiling Spindle • Spindle vertical adjustment speed: 5 m/min • Spindle diameter: 50 mm • Spindle length: 320 mm • Vertical spindle travel: 295 mm • Horizontal spindle adjustment: 60 mm • Spindle rotation direction: right • Motor power: 7.5 kW • Maximum tool diameter: 240 mm 6. Glazing Bead Notching Unit • Saw blade diameter: 200 mm • Saw blade bore: 30 mm • Horizontal spindle adjustment: 60 mm • Motor power: 2.2 kW Optional Unit 7. Hardware Slot Milling Unit • Motor power: 3 kW • Spindle diameter: 30 mm • Spindle length: 100 mm • Horizontal spindle adjustment: 60 mm • Vertical spindle adjustment: 60 mm • CNC-controlled with 2 vertical positions (maximum difference: 60 mm) • Maximum tool diameter: 190 mm Feed System • Feed speed: 4–20 m/min • Pneumatic workpiece clamping CNC Control and Software • 17" colour LCD monitor • 102-key alphanumeric keyboard • Operating system: Windows XP Professional Options • Hardware slot milling unit • Motorized NC-controlled stop • Return roller conveyor • Leitz IV 69 tool set • Leitz IV 90 tool set This machine is offered for sale on behalf of a customer. Viewing is available by prior arrangement. Please contact us through the platform's messaging system for further information and the relevant technical contact details.

Condition: used, functionality: fully functional, On offer: SAC RTE 1000 wide belt sander, with pressure shoe The machine is used, has undergone technical inspection, is fully functional, and ready for operation. Before purchase, it can be started and thoroughly inspected at our company's premises. The machine's greatest advantage is its ability to calibrate and precisely finish-sand. The unit with a hard rubber roller is responsible for leveling the surface, and the pneumatic pressure shoe with a "creep feed" function allows for precise finishing of the component. The two-speed motor and two conveyor speeds allow the operating parameters to be adjusted to the material being processed. Dedpfx Aszvuy Ija Hjwb Specifications: • Manufacturer: SAC • Model: RTE 1000 • Working width: 1000 mm • Maximum height of the workpiece: 165 mm • Number of sanding units: 2 • One combined unit: hard rubber roller, 160 mm diameter + pressure shoe • Pneumatic pressure shoe with "creep feed" function • Main two-speed motor: 10 / 12 kW • Number of conveyor speeds: 2 • Electric adjustment of the work table height • Abrasive belt blowing system • Abrasive belt dimensions: 1900 × 1000 mm • Dust extraction port: Ø200 mm • Overall dimensions: 145 × 210 × 190 cm (L × W × H, without the guard) Applications: • Calibrating and leveling solid wood components • Sanding panels and glued components • Inter-operation sanding • Precise finishing sanding using the pressure shoe • Processing components with a width of up to 1000 mm and a height of up to 165 mm • Preparing surfaces for lacquering, oiling, or further processing Additional information: • The photos show the actual condition of the machine being offered • Free machine operation training at our company's premises • The price stated in the auction applies to export/intra-community sales with a VAT rate of 0%; for domestic sales, 23% VAT will be added. Financing and transport: • We arrange transport with our MDD fleet or through external carriers • We assist in obtaining a lease or leasing loan • The delivery cost depends on the destination and the method of transporting the machine.

Condition: like new (used), functionality: fully functional, planing width: 430 mm, tool diameter: 120 mm, number of blades: 4, actuation type: electric, total length of planing tables: 2,900 mm, Equipment: CE marking, SAC FS 430 PLANER | SCM jointer planer with electric table adjustment | 430 MM! 4 TERSA knives! Professional planer from the Italian brand SAC, model FS 430. The machine is designed for precise surfacing and edge planing of wooden components. Its robust, heavy-duty construction and wide 430 mm working table make it ideal for use in both woodworking shops and for the production of furniture, doors, windows, and solid wood elements. Electric table adjustment allows for quick and convenient machine setup changes without the need for manual table lifting. The controls are located on a separate, easy-to-read operator panel. TECHNICAL SPECIFICATIONS: - Manufacturer: SAC - Model: FS 430 - Type: Planer Dodpfx Aezx Alkoa Howb - Planing width: 430 mm - Shaft: 4-knife TERSA - Shaft diameter: approx. 120 mm - Table adjustment: electric - Adjustment control: from the control panel - Table length: 2900 mm - Fence: cast iron, adjustable angle - Shaft guard: YES - Noise reduction combs: YES - Power supply: 400 V Machine testing on-site is possible. Financing options are available through leasing or installment plans. WE ORGANIZE TRANSPORT We have the following machines available: band saws, circular saws, crosscut saws and miter saws, thickness planers, jointers, sanders, horizontal and vertical drilling machines, feed systems, sharpeners, four-sided planer, four-sided, three-sided, two-sided, thicknesser, jointer, sander, planer, jointer-planer, planer-thicknesser, jointer-thicknesser, thicknesser-jointer, cleaning machine, mortiser, drilling machine, parquet machine, trimming machine, lathe, milling machine, spindle molder, top spindle, bottom spindle, sanders, wide belt sander, throughfeed sander, roller sander, disc sander, angle sander, jointer, drill, drilling machines, horizontal, radial, milling machine, multi-spindle, edge banding machines, edge bander, veneer machine, press, presses, lathes, band saws, briquetting machines, briquetting machine, chippers, chipper, wood chipper, dowel machine, dowel machines, mortiser, mortising machine, dust extraction, dust collectors, exhaust fan, fans, sharpener, sharpeners, compressor, compressors, honing machines, multi-function

Condition: ready for operation (used), Year of construction: 2012, operating hours: 1,000 h, functionality: fully functional, machine/vehicle number: SA106560, overall weight: 7,500 kg, total width: 2,970 mm, total length: 3,460 mm, total height: 2,200 mm, spindle diameter: 350 mm, type of input current: three-phase, space requirement length: 7,000 mm, space requirement width: 5,000 mm, milling spindle length: 600 mm, space requirement height: 2,600 mm, length stop: 3,400 mm, input voltage: 380 V, There are two separate machines that can operate independently from each other but also work together. We only produce windows on the SAC F30; for doors, we use the FS.05 and the F30 together. We also have a tooling set that can produce window profiles in four thicknesses: 58/68/78/88 mm and, optionally, 108 mm, from the Italian manufacturer Fantacci. It comes with a large number of spare cutting plates. All digital and paper drawings are available with order numbers for the spare cutting plates, etc. New blades can be easily ordered from Fantacci in Italy. Dust extraction pipes are included, along with pneumatic valves and automatic control. Additional software with unlimited time access allows you to design a window, door, or sliding door and send the production file directly to the machine. All information about the machine, including electrical/pneumatic layout drawings, a spare parts catalog, etc., is available. The machine will be available from 08/2026. You can see the machine in operation at our facility until 20.08.2026. If you are interested, we will provide additional information on how the machine works (1-2 days of training). You will need to arrange the transport yourself, but we will load the machine onto the truck. Dwsdpfjzq Sr Rjx Aa Heb Prices are exclusive of VAT. SAC F30 2-4 angle machine = €40,000.00 SAC FS.05 drilling machine = €14,000.00 (If both machines are purchased together, the combined price is €50,000.00) Cutting tool set, including spare cutting plates = €8,500.00 Dust extraction with automated pneumatic valves is included free of charge, as is the Ramasoft software license.

Condition: ready for operation (used), Year of construction: 2009, functionality: fully functional, Working width: 300mm Working height: 2.5-150mm 4 sanding units 2x lower unit, 2x 5.5kW, rubber sanding pads 2x upper unit, 2x 5.5kW, rubber sanding pads Dodoy Sxxvjpfx Aa Howb Sweeping brush (top and bottom) Adjustable feed rate via inverter, 4-16 m/min Electric height adjustment for sanding CE certification Year of manufacture: 2009

Condition: excellent (used), Year of construction: 2001, functionality: fully functional, grinding width: 1,320 mm, grinding height: 160 mm, Wide Belt Sander SAC Project RT 1320 Specification: • Condition – used, fully serviced and calibrated • Manufacturer – SAC • Model – Project RT 1320 • Working width – 1320 mm • Maximum working height – 160 mm • Two sanding units: - First unit: calibrating roller made of hard rubber, diameter 300 mm (brand new, recently resurfaced) - Second unit: platen with sectional shoe and jump-in/out function • Dust extraction brush at the outfeed • Main motors: 10 and 11 kW • Total machine power at full load – 28 kW • Machine operated via touchscreen panel with memory for various programs and settings as required • Capability to operate in manual mode (user-defined parameters) or automatic mode (pre-saved programs with settings and parameters) • Stepless adjustment of the second unit’s rotational speed • Stepless feed speed adjustment • Electronic thickness gauge for the workpiece Djdpow U Dxfsfx Aa Hjwb • Vacuum pump included • Belt cleaning/blow-off mechanism • Oscillation controlled by photoelectric sensors • Conveyor in very good condition • Extension roller tables included • Material thickness measuring gauge • Sensor to prevent feeding elements that are too thick • Original paintwork • Abrasive belt size – 2620 x 1320 mm • Extraction ports – 3 x 175 mm + 120 mm from brush • Weight – 2300 kg • Year of manufacture – 2001 • Overall dimensions – 255 x 205 x 230 cm (L x W x H) Additional information: • Excellent original technical and visual condition • Provided photos show the actual condition of the item for sale • Possibility to connect and test the machine on site

Condition: excellent (used), functionality: fully functional, planing width: 430 mm, tool diameter: 120 mm, number of blades: 4, actuation type: electric, rotational speed (max.): 5,000 rpm, total length of planing tables: 2,900 mm, total width: 700 mm, total height: 1,000 mm, overall weight: 750 kg, SAC FS 400 Planer | 4-knife surface planer! Excellent condition! SAC FS 400 Planer | 4-knife surface planer! EXCELLENT CONDITION! Machine from an Italian manufacturer. TECHNICAL SPECIFICATIONS: - Table length 2900 mm - Working width 430 mm Dwjdpozqlqmofx Aa Hjb - 4 traditional knives - 3kW motor - Shaft rpm 5000 - Shaft diameter 120mm - Both tables are adjustable - Stable, solid fence - Shaft damping system Machine dimensions: - Length 290 cm - Width 70 cm - Height 100 cm - Weight 750 kg WE ORGANIZE TRANSPORT WHERE CAN YOU SEE OUR MACHINES? JBS WOODWORKING MACHINERY WOLICA DRUGA 26 23-310 MODLIBORZYCE jbsmaszyny.pl

Condition: used, Year of construction: 1991, Planing width: 530 mm Planing height: 240 mm Minimum planing height: 1 mm Maximum chip removal: 8 mm Djdpfxszi Augj Aa Hewb Diameter of cutterhead: 120 mm Speed: 5000 rpm Cutters: 4 pcs Motor: 4 kW Feed rate: 5, 7.5, 10, 15 m/min Table dimensions: 960 x 530 mm Dust extraction port: 140 mm Weight: approx. 970 kg Location: Customer

Condition: used, Year of construction: 2005, total width: 1,250 mm, total height: 1,250 mm, Colour: Grey Weight: 820 kg Dimensions (LxBxH): 105 x 125 x 125 cm - Year: 2005 - Documentation available: No - CE certificate present: No - Serial number: AF 1.04487 Dwedpfxownhyzj Aa Heb - Main motor power [kW]: 4.0 - Max. planing width [mm]: 520 - Planing shaft speed [rpm]: 5000 - Planer block diameter [mm]: 120 - Number of cutters [pcs.]: 2 - Transport dimensions: 1050mm x 1250mm x 1250mm (l x w x h) - Transport weight [kg]: 820kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Yorick Diebels

Condition: excellent (used), Year of construction: 2018, operating hours: 34,000 h, functionality: fully functional, Great opportunity! Like-new Salvagnini S4 / P4 from the first owner, built in 2018! The machine is in perfect, like-new condition and ready for immediate use! The system has been regularly serviced by Salvagnini, and the machine is covered by a maintenance contract. Technical data and Salvagnini internal number: Punching machine/shear with rotating station S4Xe.30 consisting of: Conveyor belt TAC30.L2000 Corner turning device DA30 Punching machine S4Xe.30 Punch head H3 Oil-dynamic hydraulic unit HU22E Control and management of the SiX system Dwsdpfx Aozh I Iioa Hjb Right-angle shear CS5S Turning device DF Lower cylinder EI09 Embossing unit BU30 Double rotating punch P2R3132 Double rotating punch P2R3334 Threading roll unit ME35 Device for automatic application of self-adhesive labels LBC (label printer) Portal robot MC30 Conveyor with brushes CTS30 Shear lift table TCV3015 Water-air cooling unit R81E Tools (detailed list available on request) P4Xe-3125 Swivel bending machine including roller and turning station consisting of: Shear lift table TCV3015.CT.RPC Feeder-destacker device PCD3015 Turning device RIP3015 Bending center P4Xe-3125 Upper bending die LS Lower bending die LI Programmable clamping device U1 Standard clamping foot NS Control and management of the SiX system Work surface with balls SFE Device for cleaning and lubricating the bending dies PSE Asymmetrical control for auxiliary bending tools for positive bends CLA-A CLA tool set with "swan neck profile" UCE1500G38 Asymmetrical control for auxiliary bending tools for negative bends CLA-N-A CLA tool set with "swan neck profile" for negative bends UCE1500NG38 Device for V-notch RSU.UR-4 Swiveling device for auxiliary tools T Option for cutting and dispensing profiles CUT.SPC31 T-tool for 90° bends UTZ2 Delivery device/buffer for panels SAP34.POS The system has a hinged belt conveyor for central disposal of the sheet metal sections. These are then conveyed to tipping containers via a swan neck conveyor. Sorting according to stainless steel, aluminum, and black sheet metal is fully automatic. A weighing and level measuring device is integrated and reports the level via the control system. The machine can be inspected and tested by arrangement. Additional videos and detailed images of the system are available on request!

Condition: used, Year of construction: 1988, Spindle swivels: Yes, -5 to 45° Height adjustment: electric Swivel adjustment: electric Stop adjustment: manual Height indicator: scale Swivel angle indicator: scale Milling stop indicator: scale Spindle diameter: 30 mm Speeds: 3000, 4500, 6000, 8000, 10000 Motor power: 6 kW Dedpjzq Dc Isfx Aa Hswb Motor brake: Yes, automatic Dust extraction connection: 2 x 120mm Machine length: 1,200 mm Machine width: 1400 mm Weight: 1100 kg

Condition: used, Technical specifications: Spindle diameter: 35 mm Spindle height: 160 mm Spindle rotation: left/right Electric spindle height adjustment Tilting spindle Adjustable cross-slide arms Dust extraction port: 120 mm Motor power: 5.5 kW Power supply: 380 V Manufacturer: SAC Djdpfx Aszilp Hsa Hewb Overall dimensions: Length: 1120 mm Width: 1070 mm Height: 1040 mm

Condition: used, Year of construction: 1994, Belt height: 150 mm Dodpfozd Hngjx Aa Howb Belt length: 2280 to 2290 mm Belt speed: 22 m/s Two-sided sanding with oscillation Drive mechanism Veneer sanding mechanism End-face sanding / radius sanding with a small support table Surface sanding with a tilting table Belt direction: right/left Location: Nattheim

Condition: excellent (used), Year of construction: 1993, functionality: fully functional, type of input current: three-phase, planing width: 430 mm, rotational speed (min.): 5,000 rpm, total width: 950 mm, total height: 1,350 mm, overall weight: 650 kg, total length: 3,970 mm, working width: 430 mm, extraction connection diameter: 120 mm, extraction nozzle diameter: 1 mm, number of planer blades: 4, planer shaft diameter: 120 mm, Planer, jointer SAC FS 430.S Specification: • Condition: used, fully serviced • Manufacturer: SAC • Model: FS 430.S • Working width: 430 mm • Table length: 3960 mm • Infeed table length: 2500 mm Dwodpfx Aajxtd Nge Hob • Adjustable tilting fence, dimensions 1800x160 mm • Motor power: 3.0 kW • Spindle speed: 5000 rpm • Chip thickness indicator • Max cutting depth: 8 mm • Electrically adjustable planing height from control panel • Electronic chip thickness indicator • Anti-noise combs on the shaft • Motor brake • Safety guard over the shaft • 4-knife shaft, 120 mm diameter, Tersa knife system • Star-delta starting • Sawdust extraction outlet: 120 mm diameter • Year of manufacture: 1993 • Weight: 650 kg • Overall dimensions: 396 x 95 x 135 cm (L x W x H) Additional information: • Very good technical condition • Posted photos show actual condition of the item for sale • Test run and inspection on site possible.

Condition: used, Technical specifications: Spindle diameter: 35 mm Spindle height: 160 mm Speeds: 3000/4500/6000/8000/10000 rpm Dwjdpfx Aezd Etuoa Hjb Manual spindle height adjustment Manual spindle angle adjustment in the range of -5/+40 degrees Left/right rotation Spindle lock Dust extraction port diameter: 140/100 mm Work table dimensions: 850/1190 x 2500 mm Adjustable support arms Motor power: 5.5 kW Power supply: 380 V Overall dimensions: Length: 2600 mm Width: 1200/1540 mm Height: 1100 mm

Condition: excellent (used), Year of construction: 2000, SAC RS63 Thickness Planer, Year 2000 Specification: • Working width – 630 mm • Working height – 240 mm • Motor power: 7.5 kW • 4-knife cutterhead for traditional blades • Analog thickness indicator • 4 feed speeds • Full-length spiral feed roller before the cutterhead • One smooth steel outfeed roller behind the cutterhead • Manual height adjustment (up/down) • Table supported on 4 screws • Motor brake • Original paintwork • Wood chip extraction outlet – 160 mm diameter • Weight approx. 900 kg • Year of manufacture: 2000 • Machine complies with CE standards • Overall dimensions: 110 x 116 x 121 cm (L x W x H) Additional information: Dedpfx Aajn E Tlzs Hswb • The photos show the actual condition of the item for sale. • Possibility to power up and test the machine on-site.

Condition: used, SAC RS/530 Thicknesser width mm. 530 Djdpfxjyzfvgo Aa Hjwb

Condition: good (used), Code: 0288 Brand: SAC Model: F 12 Automatic working center for door and wooden window frames Technical data: Tenoning side : End cutting circular saw - Blade diameter mm 400 Motor power Hp 4 Horizontal positioning with indexing stops N° 2 tenoning spindles each lenght mm 320 Max tools diameter mm 320 Spindle diameter mm 50 Motors power each Hp 10 Max thickness of pieces mm 100 N° 2 suction inlets mm 130 Automatic table with guideline Profiling side: N° 4 profiling spindles each lenght mm 270 - Spindle diameter mm 50 Motors power each Hp 10 N° 4 suction inlets mm 130 Glass bead recovery device - Motor power Hp 3 - Blade diameter mm 200 Exhaust outlet diameter mm 60 Glass bead recovery device - Motor Hp 3 Dwjdpfx Aeyg Iq Nea Hjb Exhaust outlet diameter mm 100 Adjustable feed speed Return roller conveyor Overall dimensions - tenoning machine : mm 2900 x 2400 x 2200 h Overall dimensions - profiling machine : mm 2900 x 1400 x 1800 h Total weight kg 2900

Condition: ready for operation (used), Thicknesser SAC RS53 4 knives Specification: • working width - 530 mm • working height - 240 mm • 5.0 kW engine • 4-knife shaft for traditional knives • analog thickness indicator • 2 feed speeds • full, straight pulling shaft in front of the planing shaft Dwjdpfx Aaewgdghe Hsb • two steel outgoing rollers behind the planing shaft • sliding roller in the lower table • manual up/down adjustment • table supported by 1 solid piston • original painting • sawdust extraction outlet fi 140 mm • weight approx. 800 kg • dimensions 92 x 100 x 160 cm (length x width x height) Additional information: • the photos show the actual condition of the item for sale • the device can be switched on and checked on site.

Year of construction: 2004, condition: ready for operation (used), Tenoning machine manufactured in 2004. This SAC T4TL features a spindle length of 640 mm and a tilting table designed for tenoning and squaring. If you are looking to get high-quality tenoning capabilities, consider the SAC T4TL machine we have for sale. Contact us for further details. • Spindle Length: 640 mm • Tenoning Machine • Working Table: Tilting table for tenoning and squaring Dsdpfx Aaszug Emj Hjwb

Condition: used, Year of construction: 1997, Belt width: 150 mm Belt length: Table size: Veneer sanding unit: yes Oscillation: yes Tilting table: yes, 0°÷ 45° Extraction connection: 120 mm Dwjdpfx Aaeyffxzj Heb Motor power: 3 kW Machine length: 1440 mm Machine width: 800 mm Weight: 530 kg

Condition: used, Thickness planer SAC 530 Max. planing width: 530 mm Max. planing height: 300 mm 4 classic knives clamped with wedges Electric height adjustment Dwedpfeyt Hpwsx Aa Heb Feed speed adjustable via inverter from 4 to 16 m/min Segmented metal infeed roller 2 outfeed rollers after the planing shaft Digital height display 5.5 kW motor Quiet operation, works smoothly and efficiently