US Concepts Inc is an American manufacturer specialising in machinery developed specifically for the stair-making trade, covering processes that standard woodworking equipment is not well suited to handle. Their machines are designed by people with a thorough understanding of stair construction, and the equipment reflects that focused expertise. IWM represents US Concepts Inc in the UK to give British stair manufacturers access to dedicated tooling and machinery that can genuinely improve how they work.
- Chosen By List:
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Joinery shops producing bespoke or repetitive stair sets who need to reduce hand-routing time and improve consistency
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Stair manufacturers running multiple stair configurations and needing quick, reliable programme changeover between jobs
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Workshops where accuracy across tread profiles, riser angles, and stringer cuts is critical to fitting on site
- This Product List:
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Your workshop produces stairs regularly enough to justify a dedicated CNC stair machine and the associated setup and programming time
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You need to run multiple stair configurations — different tread profiles, open or closed stringers — and want quick programme changeover rather than manual jig changes
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Consistency and repeatability across tread profiles is important to you, particularly where staircases need to fit to tight site tolerances
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You have the floor space, electrical supply, and extraction capacity to support a machine of this size and weight
- Alternate List:
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Your stair output is lower volume or more occasional — the <a href="index.php?option=com_content&view=article&id=110&catid=33">Pouwels DEF-50 Stair Making Machine</a> may be a more proportionate fit and is worth discussing with us
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You need to cramp and assemble stair components rather than machine them — the <a href="index.php?option=com_content&view=article&id=111&catid=33">IWM 4 Piston Hydraulic Stair Cramps</a> addresses a different part of the stair-making process and may be a complementary or standalone requirement
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Your workshop cannot accommodate the floor loading of nearly 1,900 kg, or you are unable to confirm adequate three-phase electrical supply — these are prerequisites that need to be resolved before this machine can be specified
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You are primarily cutting simple or single-profile treads at low frequency, where a router table or smaller machine would be sufficient
- Key Specifications:
- Specification Name:
Max Material Width, Specification Value:
12", Specification Notes:
Sets the upper limit on tread board width this machine can accept — confirm your widest tread blank against this figure before specifying.
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Material Thickness Range, Specification Value:
¾" – 3½"
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Max Feed Speed, Specification Value:
300 FPM
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Machine Weight, Specification Value:
Approx. 4,200 lbs (approx. 1,905 kg), Specification Notes:
At nearly 1,900 kg, floor loading must be verified with your building or structural engineer before installation.
- Full Specifications:
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CNC Control, Specification Value:
FAGOR CNC 8055i/A, 3-axis
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Router Motors, Specification Value:
Two × 5HP high-speed router motors
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Speed Controllers, Specification Value:
Two adjustable speed drive controllers, Specification Notes:
Independent speed control on each motor allows feed and cut rates to be tuned to the timber species or profile being worked.
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Standard Programmes, Specification Value:
Standard Box Step with Round Nose; Blunt Nose with Rake or Straight Riser; Open Pan Rout with Partial or No Riser; Temporary Stair Rout; Centre Open Horse Cut, Specification Notes:
These programmes are built in as standard — the FAGOR control also retains full capability for editing existing programmes and entering new ones using standard CNC codes, so bespoke or non-standard profiles can be added; discuss requirements with us before ordering.
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Open Stringer Cut, Specification Value:
Yes — with 45° riser relief, Specification Notes:
The 45° relief cut is machined automatically as part of the stringer programme, removing a secondary hand operation.
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Board Advance, Specification Value:
Automatic — every cycle, Specification Notes:
Automatic advance removes the need for an operator to manually index material between cuts, supporting consistent output with a single operative.
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Tool Shank Capacity, Specification Value:
¾"
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Max Material Width, Specification Value:
12"
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Material Thickness, Specification Value:
¾" – 3½"
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Max Feed Speed, Specification Value:
300 FPM
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Dust Extraction Outlet, Specification Value:
8", Specification Notes:
An 8" outlet requires a suitably sized extraction branch — confirm your existing extraction system can accommodate this diameter before installation.
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Communication Ports, Specification Value:
RS232, USB, Network, Specification Notes:
Network connectivity supports remote programme loading and supervision, which is useful if programmes are prepared off-machine by a CAD or estimating team.
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Networking / Remote Supervision, Specification Value:
Yes
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Machine Dimensions, Specification Value:
94" L × 60" D × 64" H (approx. 2,388 mm × 1,524 mm × 1,626 mm), Specification Notes:
Allow additional clearance beyond the machine footprint for full-length stringer or board infeed and outfeed — the working envelope will extend considerably beyond the machine body.
- Specification Name:
Machine Weight, Specification Value:
Approx. 4,200 lbs (approx. 1,905 kg), Specification Notes:
Floor loading must be verified before installation.
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Construction, Specification Value:
Heavy-duty — cast iron arms and walls
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Power Requirement, Specification Value:
Three-phase — confirm supply requirements with IWM before installation, Specification Notes:
Phase, voltage, and amperage draw must be confirmed for your specific machine build before electrical supply is arranged — do not proceed without this information.
- Product Gallery:
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- Video Gallery:
- Video Link:
https://www.youtube.com/watch?v=TXzKTIiq3fY
- Video Link:
https://www.youtube.com/watch?v=XbQfcc82ph4
- Video Link:
https://www.youtube.com/watch?v=46Ol4vBGSfw
- Video Link:
https://www.youtube.com/watch?v=pjLYQIJWfiY
A dedicated CNC stair router that machines both stringers simultaneously and handles the full range of common stair profiles — box step, open pan, open stringer, and horse cut — without manual jig changes between jobs. Built for joinery shops and stair manufacturers who need consistent results across repeated or varied stair sets.
