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Woodworking Machines > Glazing Beading Machines > Copenstick TDL
Copenstick TDL industrial machine in blue with a long feed rail, conveyor belt, touchscreen panel and red control buttons
  • Copenstick TDL industrial machine in blue with a long feed rail, conveyor belt, touchscreen panel and red control buttons

Copenstick TDL

Copenstick · Timber Window & Door
A purpose-built half-lap jointing machine for SDL and TDL window bars, window grills, and decorative cabinetry. If repeatable, tear-out-free joints across mixed bar profiles matter to your production, this is the machine built to do that job.

Typically chosen by

  • Joinery shops producing SDL or TDL window units who need consistent, repeatable half-lap joints across a range of bar profiles
  • Workshops looking to reduce tooling changeover time when running multiple profiles through the same joint detail
  • Manufacturers who have experienced tear-out or inconsistency when processing fully profiled components on general-purpose machinery
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Before you commit

See it run on your own material

Bring us a sample profile or board and we'll run it through the machine at our Newark showroom. You'll see the output quality firsthand and we can talk through how it fits your workflow - before any decisions are made.
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Key specification considerations

Joint Type
90° Half-Lap
Application
SDL / TDL bars, window grills, decorative cabinetry
Profiled Component Capability
Yes — fully profiled sections can be processed
Three-sided milling with the workpiece held under clamp throughout means profiled bars are machined without releasing or rotating, reducing the risk of tear-out on finished faces.
Changeover Requirement
Single tooling setup for vertical and horizontal cuts
Because the half-lap cut geometry is the same regardless of bar profile, you do not need to swap tooling between the two halves of the joint — useful when running mixed profiles in the same session.
See full specifications
SpecificationValueNotes
Joint Type
90° Half-Lap
Application
SDL bars, TDL bars, window grills, decorative cabinetry
Profiled Component Capability
Yes
Three-sided milling under continuous clamp allows fully profiled sections to be machined without rotation, minimising tear-out risk.
Clamping Method
Fixed clamp — workpiece held throughout machining cycle
Holding the workpiece on all three milled sides simultaneously is what allows the machine to achieve repeatable accuracy without operator intervention mid-cycle.
Tooling Changeover
Reduced — same cut geometry for both joint halves
Machine Dimensions
480 × 800 × 1500 mm (excluding flip stop and supports)
Allow additional floor clearance beyond the footprint for the flip stop, infeed support arms, and operator access — the working envelope is considerably larger than the machine body alone.
Weight
150 kg approx.
Motor Power
3 × 800 W spindle motors
Electrical Supply
240 V, 16 A, Single Phase, 50 Hz
Single-phase supply means the TDL can run from a standard workshop socket — no three-phase installation required.
Pneumatic Supply
6 Bar
A dedicated compressed air supply at 6 bar is required to operate the pneumatic clamps and foot-pedal cycle.
Extraction Connection
120 mm port
Copenstick recommend a minimum airflow of 1,500 m³/h at this connection — check your extraction unit's capacity before installation.
Max Bar Section (Width × Depth)
17–60 mm wide × 10–56 mm high
Confirm your specific bar section dimensions fall within this range before specifying — bars outside these limits cannot be processed.
Spindle Speed
24,000 RPM
Tooling Holding
ER11 Collets
CE Marked
Yes
CE marking confirms the machine meets applicable EU/UK machinery safety directives and ships with the required documentation — relevant if your quality system requires machine conformity records.
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Is this the right
machine for you?

Choose the Copenstick TDL if...

  • Your production centres on SDL or TDL window bars and you need a machine purpose-built for the half-lap joint rather than an adapted general-purpose solution
  • You run a variety of bar profiles and need to avoid repeated tooling changes between joint halves — the TDL's single-setup geometry saves time across mixed batches
  • Tear-out on profiled sections has been a problem on your current equipment — the three-sided clamped milling cycle addresses this directly
  • Joint strength and visual consistency matter to your end product, and you want the reliability of a half-lap over individually mitred pieces

Consider an alternate model if...

  • Your work involves a wider range of joint types beyond the half-lap — the Copenstick UNI may offer more flexibility across different joint geometries
  • You need end-profiling or scribing on glazing bead rather than half-lap jointing — the HEP Glazing Bead End Profile Scribing Machine or the Dan-List PME 100 Endscribe Machine would be more appropriate
  • Your volume or budget does not justify a dedicated SDL/TDL machine — talk to us about whether the Copenstick STP or PIN would cover your requirements at a different price point
  • Your bar section dimensions fall outside 17–60 mm wide or 10–56 mm high — confirm your sizes with us before specifying this machine
Still not sure? We're happy to help
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