Choosing aluminium window and curtain wall machinery starts with the profiles and operations you need to process, not the model number alone. Use this checklist to compare equipment and prepare a clearer enquiry before ordering a new machine or expanding a production line.

1. Start with your profile drawings

Prepare cross-section drawings and finished-part drawings for representative window frames, sashes, mullions or curtain wall profiles. Include the material, surface finish, stock length, finished length and required machining features. Mark critical dimensions and tolerances on the drawing instead of relying on a general request for high precision.

If you process several profile systems, provide both common jobs and the largest or most difficult sections. Ask the supplier to check tool access, support and clamping for each example.

2. Match each operation to a machine category

• Cutting to length and angle: compare aluminium profile cutting saws. Specify the required cutting angles, section dimensions and finished lengths.
• Holes, slots and milled features: review CNC profile machining centers and drilling and routing equipment. Identify which faces need processing and how the part will be positioned.
• End preparation: compare end milling machines against the actual joint drawing and cutter arrangement.
• Frame corner assembly: review corner crimping equipment with the profile, corner connector and joint requirements.
• Curved profiles: review profile roll bending machines. Supply the cross-section, target radius, bend direction, arc length and acceptable surface and section changes for a feasibility review.

3. Compare the usable working envelope, not just axis count

For CNC machining, ask the supplier to confirm the usable working range with the selected tools and clamps installed. A longer travel specification does not by itself establish that every profile can be machined in one setup.

Compare the LGS3-CNC-7000, LGS4-CNC-7000 and LGS5-CNC-7000 using your part drawings. Confirm the required machining faces, repositioning steps, tooling and software in the quotation. More axes are not automatically the best choice for every workshop.

4. Plan around your production mix

Tell the supplier your typical batch size, number of profile changes per shift and required finished output. Request a cycle estimate based on a named sample part, including loading, clamping, machining, unloading and changeover. Do not compare output figures unless the job and measurement conditions are comparable.

For a line upgrade, identify the current bottleneck first. Faster machining may not increase finished output if cutting, material handling or assembly remains the limiting operation.

5. Confirm installation and quotation boundaries

• Local voltage, frequency and phase; compressed-air requirements where applicable.
• Machine footprint, access for loading long profiles and maintenance clearance.
• Included tools, clamps, supports and software; separately priced options.
• Training, commissioning arrangements, manuals and remote support.
• Spare parts, consumables, warranty scope and agreed delivery terms.

6. Agree a sample-based acceptance check

Before confirming the order, agree which sample profiles will be tested and how the finished dimensions, surface condition and joint fit will be checked. Ask for photos or an unedited processing video of the agreed sample when available. A demonstration using a different profile should not be treated as proof that your own part meets its requirements.

Prepare your machine enquiry

Send your profile drawings, required operations, finished dimensions, production target and local power supply through our machine enquiry page. You can also browse the complete machinery catalogue to build a shortlist. Final machine configuration and suitability should be confirmed against your drawings and quotation.