Glass Cutting From Customer Drawings: What to Send

Yes, architectural glass can be processed from a customer drawing or glass schedule. The drawing must identify the finished pane dimensions, glass type, thickness, quantity, holes, notches, cut-outs, edge treatment, finish and installation context. Features that cannot be added later must be approved before production.

A useful drawing describes the pane to be manufactured, not only the wall opening where it will be installed. The process below explains how to prepare a drawing for review, quotation and fabrication.

Can Glass Be Cut From a Customer Drawing?

A glass processor can work from a customer drawing or schedule when the dimensions and processing requirements are clear enough to convert into a production specification. Pinnaacle Glastech LLP's workflow covers drawing receipt, specification confirmation, cutting, edging, required downstream processing, inspection and dispatch.

Cutting and sizing happen before later routes such as toughening, lamination or insulating-glass assembly. The Bureau of Energy Efficiency's process map also places cutting and sizing before edging and grinding, followed by routes such as toughening, PVB lamination and insulated-glass assembly. See the glass-processing sequence for how these stages relate.

The Drawing-to-Dispatch Workflow

1. Submit the drawing or schedule: Include the latest revision, project location, application, quantities and intended glass build-up.
2. Review the specification: Check finished dimensions, thickness, glass type, appearance, edgework, holes, notches, cut-outs and orientation.
3. Resolve questions: Clarify missing hardware details, conflicting dimensions, site conditions and uncertain processing requirements.
4. Prepare the quotation: The quotation should reflect the agreed pane sizes, build-up, processing route, quantity, delivery location and requested timeline.
5. Approve the production reference: Identify the exact drawing revision or glass schedule that controls manufacture.
6. Cut and finish the panes: Complete cutting, edging, seaming, holes and other specified work as required.
7. Apply the downstream route: Depending on the specification, this may include tempering, lamination, heat soaking or insulating-glass assembly. Not every pane passes through every process.
8. Inspect, pack and dispatch: Pinnaacle states that panes are inspected before leaving its Rajsamand, Rajasthan plant, then packed and dispatched to the site or fabricator.

Production should not begin until dimensions, build-up, edges and finishes are agreed. This gives the customer and processor one shared reference for the pane being made.

Opening Size, Frame Size and Finished Pane Size Are Different

The structural opening, frame or rebate size, and finished glass size are separate measurements. Label each one clearly instead of using a single dimension that another person could interpret differently.

Dimension	Meaning	Why it matters
Structural opening	Building opening available for the frame or glazing system	It does not automatically equal the glass size.
Frame or rebate dimension	Profile, channel or rebate receiving the pane	Hardware, gaskets, setting blocks and clearances affect the pane required.
Finished pane size	Width and height of the glass to be cut	This is the production dimension for the individual pane.
Site measurement	Condition measured at the installation location	Out-of-square openings and existing hardware can change the requirement.

Show the datum used for every important feature. Locate a hole from the finished bottom and left edges, for example, rather than from an unspecified corner of the opening. Mark whether the drawing is viewed from the interior or exterior, and identify the top, bottom, face, coating side or pattern direction where orientation affects installation.

If the pane fits an existing frame, supply relevant site measurements and installation conditions for technical review. Do not assume that a nominal opening dimension provides the finished pane size. Cutting before tempering matters because holes, notches, edgework and final dimensions must be completed or confirmed before tempering.

Customer Drawing Checklist for a Quote-Ready Glass Panel

Use this checklist for a drawing-based enquiry. Confirm the accepted file format with the processor, and do not assume that a hand sketch is sufficient for production approval.

• Project: Project name, location, application and delivery location.
• Panel identification: Unique panel or elevation ID, quantity and revision number.
• Finished dimensions: Width, height, shape, thickness and units. State that these are finished pane dimensions.
• Glass type: Toughened, PVB laminated, SGP laminated, insulating glass unit, heat-soaked toughened or another specified build-up.
• Appearance: Clear, tinted, reflective, coated, patterned or privacy finish. State pattern direction or coating orientation where relevant.
• Edges: Raw, seamed, polished or another required edge treatment. Label each edge clearly.
• Features: Holes, slots, notches, cut-outs, recesses, rounded corners and other geometry, each dimensioned from identified datums.
• Hardware: Hardware reference, fixing position, hinge or handle location and required clearance.
• Orientation: Inside or outside face, top and bottom, handedness, visible surface, coating position or pattern direction.
• Installation context: Frame, channel, façade, door, partition, canopy, overhead location or other support arrangement.
• Project controls: Required tolerances, delivery constraints, packing requirements and requested timeline.
• Open questions: Mark uncertain dimensions, build-ups, edges or hardware details for technical confirmation.

A practical customer drawing checklist should be coordinated with architectural plans, frame details and the hardware schedule. A drawing can be accurate in isolation yet unsuitable for the surrounding assembly.

Choose the Processing Route Before Finalising the Drawing

“Cut glass” is not one identical product. The drawing must describe the final route because the build-up and processing sequence determine which dimensions and features must be resolved before production.

Glass route	Drawing requirements	Production implication
Toughened safety glass	Finished size, thickness, shape, holes, notches, edgework, finish, quantity and orientation	All cutting and edgework must be completed or confirmed before tempering. Toughened glass cannot be cut afterward.
PVB laminated glass	Finished size, laminate build-up, PVB requirement, edges, openings, finish and quantity	A standard safety laminated option such as PinnGuard 33.1 is specified by its project build-up and processing requirements.
SGP laminated glass	Complete glass and SGP interlayer build-up, dimensions, edges, openings and application context	Do not request only “laminated glass” when the design requires a particular interlayer or build-up.
Insulating glass unit	Each lite, cavity or spacer requirement, overall unit size, edge details, coatings, seals and orientation	An IGU is a fixed assembly, not simply two independent panes. Coordinate the complete unit specification.
Heat-soaked toughened glass	Underlying toughened-glass details plus the heat-soak requirement and application context	Heat soaking is an additional screening stage after toughening. It lowers nickel-sulphide-related risk but does not eliminate spontaneous-breakage risk.

When a drawing calls for retained fragments rather than only a toughened pane, a standard safety laminated glass option may be more appropriate. Its dimensions, openings, edge finish and build-up still require project confirmation.

For higher-consequence applications, the drawing may call for heat-soaked toughened glass instead of standard toughened glass. Heat soaking is a screening step, not a substitute for suitable design and support.

In India, BIS groups safety glass under toughened, also called tempered, and laminated safety glass categories in IS 2553 (Part 1):2018. Check the applicable requirements for the project and product scope. BIS records Amendment No. 2, including provisions affecting certain curved, smaller or thinner toughened safety glass, with implementation stated from January 28, 2025. Review the BIS grouping guidance and the published amendment notice where those conditions apply.

Features That Need Technical Confirmation

Show holes, notches and cut-outs as actual geometry with dimensions, locations and datums. “Hole for handle” is not enough if the hardware model, hole size or clearance is unknown.

Internal corners, rounded corners, edge distances, slots and recesses also need review against the glass type, thickness, support arrangement and processing route. Do not add an assumed minimum radius, hole diameter or edge distance unless it comes from the project design or is technically confirmed.

Mark seaming or polishing by edge, and show which edges are exposed, captured in a frame or used for hardware. Label uncertain items “to be confirmed” and resolve them before approval.

A Hypothetical Drawing Example: One Custom Door Panel

This is a hypothetical example, not a real project or production tolerance. It shows the information a fabricator or contractor could place on a drawing for technical review.

Drawing field	Hypothetical entry
Panel ID and revision	D-04, Revision R2
Finished pane size	Width and height stated as finished glass dimensions in millimetres
Build-up	Toughened safety glass, thickness to be confirmed against the project specification
Quantity	1 panel
Orientation	Viewed from the corridor side, top marked, right-hand door shown
Hardware features	Two holes located from the finished bottom and left-edge datums
Edges	Exposed vertical edges marked for the required finish, captured edges identified separately
Opening note	Frame opening measurement shown separately from finished pane size
Installation note	Hardware reference and required clearances attached

This example is not ready for approval if the hole diameter, hardware model, exact finished dimensions, edge requirement or installation clearance is missing. The next revision should resolve those items and identify the source of every critical dimension.

Drawing Review, Approval and Revision Control

Before fabrication, compare the latest drawing with the quotation, glass schedule, hardware schedule and architectural details. Confirm panel IDs, quantities, finished dimensions, build-up, finish, edges, openings, orientation, delivery location and timeline as one coordinated set.

Record clarifications against a specific revision. If a hole moves, a pane changes size, the glass type changes or the edge treatment is revised, issue a new revision instead of editing an old file without changing its identifier.

Customer approval should name the exact revision released for production. A later change may require a revised quotation or new pane, particularly for toughened glass because it cannot be cut after tempering.

Approval and Common Mistakes Before You Release the Order

• Label every dimension as structural opening, frame, rebate, site or finished pane size.
• State the glass type, thickness, build-up and quantity for each panel.
• Dimension holes, slots, notches, cut-outs and corners from clear datums.
• Identify exposed, captured, seamed and polished edges.
• Show top, bottom, face, handedness, coating position and pattern direction.
• Coordinate the drawing with hardware, frame and installation details.
• Use the same revision for quotation approval and production.
• Include delivery location, packing constraints and requested timeline.
• List unresolved technical questions instead of leaving them to assumption.

Common mistakes include using the structural opening as the finished pane size, omitting hardware locations, mixing revisions, requesting “laminated glass” without a build-up, leaving edgework undefined and expecting holes to be added after toughening.

For architectural, building and general-use safety glass, check the applicable Indian requirements against the current project scope. The BIS safety-glass requirements identify IS 2553 (Part 1):2018 and the relevant conformity-assessment framework for covered safety glass.

What to Send With a Drawing-Based Enquiry

Send the latest drawing or glass schedule with the project and delivery location, application, panel IDs, quantities, finished dimensions, thickness, preferred glass route, edgework, holes, cut-outs, finish, orientation and installation context. Add the required timeline and list items needing technical confirmation.

If the final glass type is undecided, describe the performance objective instead, such as safer breakage, retained fragments, a laminated build-up, heat-soak screening or an insulating-glass unit.

Pinnaacle Glastech LLP processes architectural glass to customer drawings from Rajsamand, Rajasthan, with cutting, edging, seaming, tempering, heat soaking, lamination and insulating-glass assembly available according to the order. For a project-specific review and quotation, share the drawing with Pinnaacle's architectural glass processing service.