How to Get Glass Cut to Size
- Best in Glass

- Oct 3, 2025
- 5 min read
If you need accurate, made-to-measure panels for a trade job, the simplest route is to order cut-to-size glass from a specialist supplier. You get clean edges, drilled holes where needed, and the correct thickness for your system. This guide covers what to prepare, how to brief a supplier, and how to avoid delays or reorders.
Best in Glass is a supply-only partner based in Staffordshire. We deliver nationwide. We offer both stock items and bespoke manufacture. If you want quick, practical advice, call 01889 226444 or email contact@bestinglass.uk.

Decide whether you need bespoke or stock sizes
Stock pieces are useful when tolerances are forgiving and the edge is hidden. For shelves, temporary protectors, or simple infills, an off-the-shelf panel can be enough. You can browse current availability in the catalogue of stock products.
Most trade installations need exact sizes, polished edges, and holes for hardware. In these cases, made-to-measure is the right choice. That is typical for glass partitioning systems, glass balustrades and railings, and furniture-grade glass table tops.
What to prepare before you ask for a quote
A good brief saves time and money. Most suppliers will need:
Panel width and height in millimetres
Quantity per size
Glass thickness
Edge finish (arrised or flat-polished)
Holes and notches with sizes and centres from the nearest edges
Corner details, such as radius size
Delivery postcode and your timeframe
Include a simple drawing if possible. A clear PDF or DWG removes guesswork and speeds up pricing.
Choosing the right glass and thickness
Toughened (tempered) glass is common for internal partitions, doors, and balustrade panels because it is stronger and safer in use. For many interior systems, 10 mm or 12 mm are typical thicknesses. Always follow your hardware supplier’s guidance for thickness, hole diameters, and edge distances. If you are fitting stand-offs, hinges, or base shoes, check their technical drawings first.
If you are unsure, ask. Our team speaks to installers daily and can explain what works with common channels, clamps, and gaskets.
Edge finishing options
Edges can be supplied with a safe arris or a flat-polished finish. Flat-polished is the smarter choice for visible edges on partitions and furniture. It looks clean and reduces handling risk. If the edge will be fully hidden in a channel or frame, a simple arris may be suitable.
Remember that edge choice affects fit. A polished edge removes more material and gives a very consistent finish. Confirm your clearances with your chosen system.
Holes, notches, and shaping
Any holes for hinges, handles, lock keeps, or stand-offs must be added before the panel is toughened. The same applies to notches for channels and shaped profiles or radius corners. You cannot cut or drill toughened glass after tempering. If a hole is missed, the piece will need to be remade.
Keep hole sizes and corner radii consistent across a batch where you can. Repetition helps with both cost and lead time.
Measuring and tolerances
Measure the opening in several places and work to the tightest size. Confirm squareness and note any out-of-true conditions that may affect fit. Allow a sensible clearance for:
Channel or clamp tolerances
Gaskets and packers
Thermal movement and building movement
Follow the hardware drawings for minimum edge distances. Small changes here make a big difference to strength around holes. If you need a sense-check on clearances, send a sketch to contact@bestinglass.uk and we will review it.
How lead times and delivery work
Lead times vary with size, processing steps, and quantity. A single panel with simple polishing is faster than a batch of door leaves with multiple holes and notches. Delivery is planned on national routes. Larger or heavier items may require specific offload conditions. Tell us your deadline up front and we will give an honest view of what is achievable.
Ordering steps, from enquiry to delivery
Share your sizes, thickness, edge finish, and any holes or notches.
Include a drawing and confirm quantities and postcode.
Receive an itemised quote with a proposed lead time.
Approve drawings if supplied for sign-off.
Manufacture starts. All machining is done on annealed glass.
Panels are toughened, quality checked, packed, and shipped.
If other trades must finish first, consider a site check with annealed samples, then confirm final sizes for toughening.
Common mistakes that cause reorders
Ordering toughened glass before finalising hole positions
Forgetting to allow for gaskets or packers in channels
Mixing hole diameters across a batch without a reason
Assuming you can trim a few millimetres on site
Toughened glass cannot be cut, ground, or drilled after tempering. If a panel is wrong, the safe solution is to reorder the correct piece.
Typical applications and what to specify
Glass partitions. Confirm channel type, door hardware set, and clearances. Share hole centres and edge distances as per the hardware drawings.
Balustrades and railings. Provide clamp centres or base shoe layout. Keep panel sizes consistent where possible.
Furniture and interiors. For table tops and shelves, polished edges and radius corners give a neat, safe finish. If the edge sits behind a bead, an arris may be enough.
Fittings and ancillaries. Brackets, silicones, setting blocks, and sealants are all available in the range of glass hardware and tools.
Costs and value
Prices depend on material, thickness, panel size, edge finish, hole count, shaping, quantity, and delivery. Batch runs are better value than one-offs. Keeping hole sizes and radii consistent reduces set-up time. If budget is tight, consider whether any edges will be hidden and can be supplied with a simple arris.
For a quick, accurate quote, send your details to contact@bestinglass.uk or call 01889 226444.
Why trades choose Best in Glass
We are a Staffordshire-based, supply-only partner with nationwide delivery. Reviews often highlight helpful advice and straightforward communication. We support trade customers with both stock and bespoke options. Our aim is to help you order once and install with confidence.
If you are weighing up 10 mm versus 12 mm, choosing between arrised and polished edges, or planning hole layouts for a door set, speak to us. You will get plain, practical guidance before you commit.
FAQs
Can I cut or drill toughened glass on site?
No. All cutting, drilling, and shaping must be completed before tempering. Attempting to alter a toughened panel will cause it to shatter.
What information do you need for a quote?
Panel sizes in millimetres, thickness, edge finish, hole and notch details, corner radii, quantity, delivery postcode, and your timeframe. A drawing helps a lot.
What thickness should I choose?
For many interior systems, 10 mm and 12 mm are common. Follow your hardware supplier’s specification for thickness and edge distances.
Do you deliver nationwide?
Yes. We deliver across the UK. Lead times depend on size, processing, quantity, and route planning.
Can I order both bespoke and stock pieces on the same job?
Yes. Many projects mix stock items for simple tasks with bespoke panels for tight fits and visible edges. We will advise on the best approach.




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