Bases, trays and converters designed to work together.
Choose an exact size, keep existing models on their bases, or build a formation that fits your army.
PRODUCT-SPECIFIC DIMENSIONS SHOWN ON THE RELEVANT PDP
What do you need to do?
I know my base size
Choose the base shape, then find your required dimensions.
I need a movement tray
Choose a tray or adapter for your base size and formation.
I want to avoid rebasing
Increase base size or change shape while keeping your existing bases.
I am not sure what size I need
Check your miniature against life-size printable templates.
Shop Bases by Shape
Choose the base shape you need, then find the exact dimensions.
Round Bases
The most common tabletop base shape, available in a wide range of sizes.
Square Bases
Precision square bases for ranked formations and classic tabletop systems.
Rectangular & Cavalry Bases
Rectangular footprints for cavalry, infantry and specialist models.
Oval Bases
Oval bases for larger miniatures, creatures and scenic models.
Looking for a different footprint?
Browse Hexagonal, Pill and other specialty base shapes.
Keep Your Models on Their Existing Bases
Change the footprint, not the miniature. OBS converters help you update base size or shape without permanently rebasing painted models.
Increase Base Size
Move to a larger supported footprint without removing the original base.
Change Base Shape
Change between supported base shapes while keeping the original base inside.
Available conversions depend on the original base shape and the footprint you need to create.
Always check current game rules before changing a model's footprint.
Move Your Unit as One
Choose a standard tray for your base shape, size and formation — or use an adapter when existing bases need to work in a different compatible tray layout.
Standard Movement Trays
Choose a tray built for your base shape and size, then select the available formation within the product listing.
Movement Tray Adapters
Use an adapter when your existing bases need to work in a supported movement tray formation with a different shape or footprint.
Check the product drawing to confirm base fit, formation layout and overall footprint before ordering.
Not Sure What Size You Need?
Choose the route that matches what you already know.
I need to choose a base for my model
For custom or 3D-printed models, models without a known base size, or when you need to check whether a footprint fits. Includes life-size printable templates.
I need a game-specific base reference
Check our base-size reference guides when you need a starting point for a specific game, range or edition.
Base sizes can vary between older models, game editions and manufacturers. Measure an existing base where possible, or use printable templates to assess a custom model before ordering.
One System. Designed to Work Together.
OBS bases, converters, movement trays and display extenders are designed around matching geometry, so you can build, adapt, organise and display your collection with more confidence.
Choose the parts you need — each is designed around compatible OBS geometry.
Designed as a system
Bases, converters, movement trays and display extenders are developed around matching OBS dimensions.
Technical dimensions shown clearly
Use the product drawing to check true dimensions, fitment and overall footprint before buying.
Precision-fit approach
OBS parts are designed for precise fit across supported OBS components and compatible base footprints.
Keep your options open
Build, convert, move or display models without committing to a permanent rebase.
Ready for Your Own Magnets
OBS bases have an open underside with usable space around the raised Hobby Heaven logo, ready for a separately chosen magnet for storage and transport.
There is no fixed magnet slot or universal magnet size. Check the technical drawing on the relevant product page to assess the available underside space before choosing a magnet.
Magnets sold separately.
Choose Physical Products or STL Files
Choose ready-made OBS products shipped to you, or downloadable STL files for your own 3D printer. Availability varies by design.
Physical OBS Products
Manufactured OBS bases, converters, trays and accessories, shipped directly to you.
Best for: customers who want manufactured parts without home printing.
- Injection-moulded ABS core range
- Selected specialist products in FDM PLA or PETG
- Technical drawings shown on product pages
OBS STL Files
Downloadable files for customers printing their own bases, trays and accessories.
Best for: customers with a suitable printer and their own print workflow.
- Instant digital download
- Print at 100% scale
- Check file details and licence before purchasing
Selected designs only — not every OBS product is available in both formats. Check the relevant product or file listing before purchasing.
Still Not Sure What You Need?
Start with the guide that matches your question, or contact us if your requirement falls outside the standard OBS range.
How do I find my base size?
Use our life-size printable templates to compare your model or existing base before ordering. Base sizes can vary between older models, game editions and manufacturers.
Find My Base SizeWill an OBS converter fit my existing base?
OBS converters are designed for specific original base shapes and sizes. Check the relevant product drawing for original fit, resulting footprint and added height before ordering
Explore Base ConvertersWhat is the difference between a converter and a movement tray?
A converter changes the footprint of one existing base. A standard movement tray holds multiple bases in a formation. A movement tray adapter helps existing bases work in a supported different tray layout — it is not a base converter.
Explore Movement TraysCan I add magnets to OBS bases?
Yes. OBS bases have an open underside with usable space around the raised central Hobby Heaven marking for magnets you choose and glue in yourself. There is no fixed magnet recess or universal magnet size. Check the relevant product drawing to assess available space. Magnets sold separately.
Explore Magnet-Friendly BasesIs this a physical product or a digital STL file?
Physical OBS products are manufactured and shipped to you. STL files are digital downloads for use with your own 3D printer — no physical product is shipped. DIGITAL FILE — NO PHYSICAL PRODUCT SHIPPED. Availability varies by design, so not every OBS product is offered in both formats.
Browse STL FilesNeed an unusual size or a solution outside the standard range?
Tell us what you are trying to fit. We can help you identify the closest available option and use enquiries to guide future OBS development.
Ask About a Custom SizeTell Us What You Need
Include the current footprint, the result you need and the quantity required. A clear photo or reference link can help us assess the request.
Custom OBS requests are reviewed individually. Availability, pricing and lead time depend on the required geometry, quantity and production feasibility.