eBay

PRODUCT DESCRIPTION

Open Basing System · Base Converters · Made in Derby, UK

100x60mm to 120x60mm Rectangle Base Converters

Stretch your 60 x 100mm bases to the longer 60 x 120mm footprint without rebasing. Same width, 10mm extra at each end — drop the base in and play, lift it out any time.

✅ Key Benefits

🛠️ No rebasing – keep your painted models on their existing 60 x 100mm bases. No cutting models off, no repainting basing work.

📐 Made to drawing – 100.2mm between the end stops gives 0.1mm clearance at each end, so a standard 60 x 100mm base drops in snugly without forcing.

📏 Open sides, width unchanged – the long sides are open, so your 60mm-wide base sits flush with the converter edges. The model keeps the same frontage and only gains length.

🧱 True 120 x 60mm footprint – matches our 120 x 60mm bases, so converted and new models line up flush side by side.

💷 Cheaper than rebasing – a converter costs less than a new base plus the time to remove and rebase a finished model.

🔍 What Is This?

60 x 100mm is a common size for war machines, monsters and larger models in rank-and-flank fantasy and historical wargames. Some newer rules and releases call for a longer 60 x 120mm footprint instead, and rebasing a finished model is the last thing anyone wants to do.

This converter is a 120 x 60mm plate with a raised end stop at each end and open long sides. Your 60 x 100mm base sits on the plate between the two end stops, which add 10mm at each end. Because the sides are open, the base edges run flush with the converter and the width stays at 60mm.

It's part of the Open Basing System, our range of bases, converters and trays designed to work together. If you're starting fresh, our 120 x 60mm bases are the same outside size, so converted and new models match.

📐 Specifications

Converts	100 x 60mm rectangle → 120 x 60mm rectangle
Outer size	120 x 60mm
Added length	10mm at each end (20mm in total)
Width	60mm — unchanged, open long sides
Space between end stops	100.2mm (0.1mm clearance per end)
Height	6mm at the end stops, 1mm floor under the base
Central floor window	82 x 37mm
Edge	Bevelled outer edge
Material	Black PLA, FDM 3D printed
Range	Open Basing System (OBS) converters
Made in	Derby, United Kingdom

📦 Pack Sizes

Choose 1, 2, 3, 5, 10 or 25 converters from the drop-down. The more you buy, the lower the price per converter.

Converters only — models and 60 x 100mm bases are not included.

🔧 Compatibility

✔️ Takes

• Standard 60 x 100mm rectangle bases, including our own OBS 60 x 100mm bases

• War machines, monsters, chariots and large models already mounted on 60 x 100mm

✔️ Gives you

• A 60 x 120mm footprint for rank-and-flank fantasy and historical wargames

• An exact match with our 120 x 60mm bases for mixed units

✖️ Not for

• 50 x 100mm bases — use our 100x50 to 120x60mm converter for those

• Other rectangle sizes — this converter is sized for 60 x 100mm only

• Round or oval bases

Base sizes change between editions and events. If you play in tournaments, check the current base size for your unit with your organiser before converting a whole army.

💡 Pro Tips

🧪 Check the fit. Older bases sometimes carry flock, sand or paint over the edges — scrape that back so the base sits flat and square between the end stops.

🔁 No glue needed. The converter is designed to be removable — your base sits between the end stops and lifts back out, so you can switch between the original size and 60 x 120mm whenever a game or event calls for it. We don't recommend gluing the base in.

🏜️ Base the end stops on their own. Texture and paint the end stops to match your army, but keep basing material off the floor and off your base's edges, so the base still lifts out cleanly.

🎨 Prime before painting. Any standard primer works on PLA. Then paint the rim to match the rest of your army.

🧲 Planning magnets? Fit them to the original base first, then drop the base into the converter.

⚖️ Worth Knowing

• These are 3D printed. You'll see fine layer lines on the sides. They disappear under primer and basing, but they're not as smooth as injection-moulded plastic.

• PLA doesn't like heat. PLA is stiff and holds accurate dimensions, which is why we use it for converters, but it can soften if left somewhere very hot — like a car dashboard in summer. Store your army out of direct sun.

• Your base sits 1mm higher. The base rests on a 1mm floor and the end stops are 6mm tall, so depending on your original base there may be a small step at each end. Texturing the end stops to match your basing makes it barely noticeable.

• The sides are open by design. That keeps the width at exactly 60mm. The long edges of your base stay visible, so paint them to match the end stops.

• Starting a new army? If your models aren't based yet, our 120 x 60mm bases are the simpler choice. Converters are for models already on 60 x 100mm.

🚚 Shipping

📦 Orders placed before 3 PM (Mon–Fri) are dispatched the same working day from our workshop in Derby.

🛒 Combined postage — add bases, other converters or movement trays to the same order and pay postage once.

🚀 Larger orders get a free upgrade to Royal Mail 24 Tracked.

Hobby Heaven

By Hobbyists. For Hobbyists.

Designed and printed in Derby as part of the Open Basing System — bases, converters and trays that work together, so you're never locked into one base size. Got a size we don't make yet? Message us — the range grows from customer requests.

Open Basing System · Base Converters · Made in Derby, UK100x60mm to 120x60mm Rectangle Base ConvertersStretch your 60 x 100mm bases to the longer 60 x 120mm footprint without rebasing. Same width, 10mm extra at each end — drop the base in and play, lift it out any time.✅ Key Benefits🛠️ No rebasing – keep your painted models on their existing 60 x 100mm bases. No cutting models off, no repainting basing work.📐 Made to drawing – 100.2mm between the end stops gives 0.1mm clearance at each end, so a standard 60 x 100mm base drops in snugly without forcing.📏 Open sides, width unchanged – the long sides are open, so your 60mm-wide base sits flush with the converter edges. The model keeps the same frontage and only gains length.🧱 True 120 x 60mm footprint – matches our 120 x 60mm bases, so converted and new models line up flush side by side.💷 Cheaper than rebasing – a converter costs less than a new base plus the time to remove and rebase a finished model.🔍 What Is This?60 x 100mm is a common size for war machines, monsters and larger models in rank-and-flank fantasy and historical wargames. Some newer rules and releases call for a longer 60 x 120mm footprint instead, and rebasing a finished model is the last thing anyone wants to do.This converter is a 120 x 60mm plate with a raised end stop at each end and open long sides. Your 60 x 100mm base sits on the plate between the two end stops, which add 10mm at each end. Because the sides are open, the base edges run flush with the converter and the width stays at 60mm.It's part of the Open Basing System, our range of bases, converters and trays designed to work together. If you're starting fresh, our 120 x 60mm bases are the same outside size, so converted and new models match.📐 SpecificationsConverts100 x 60mm rectangle → 120 x 60mm rectangleOuter size120 x 60mmAdded length10mm at each end (20mm in total)Width60mm — unchanged, open long sidesSpace between end stops100.2mm (0.1mm clearance per end)Height6mm at the end stops, 1mm floor under the baseCentral floor window82 x 37mmEdgeBevelled outer edgeMaterialBlack PLA, FDM 3D printedRangeOpen Basing System (OBS) convertersMade inDerby, United Kingdom📦 Pack SizesChoose 1, 2, 3, 5, 10 or 25 converters from the drop-down. The more you buy, the lower the price per converter.Converters only — models and 60 x 100mm bases are not included.🔧 Compatibility✔️ Takes• Standard 60 x 100mm rectangle bases, including our own OBS 60 x 100mm bases• War machines, monsters, chariots and large models already mounted on 60 x 100mm✔️ Gives you• A 60 x 120mm footprint for rank-and-flank fantasy and historical wargames• An exact match with our 120 x 60mm bases for mixed units✖️ Not for• 50 x 100mm bases — use our 100x50 to 120x60mm converter for those• Other rectangle sizes — this converter is sized for 60 x 100mm only• Round or oval basesBase sizes change between editions and events. If you play in tournaments, check the current base size for your unit with your organiser before converting a whole army.💡 Pro Tips🧪 Check the fit. Older bases sometimes carry flock, sand or paint over the edges — scrape that back so the base sits flat and square between the end stops.🔁 No glue needed. The converter is designed to be removable — your base sits between the end stops and lifts back out, so you can switch between the original size and 60 x 120mm whenever a game or event calls for it. We don't recommend gluing the base in.🏜️ Base the end stops on their own. Texture and paint the end stops to match your army, but keep basing material off the floor and off your base's edges, so the base still lifts out cleanly.🎨 Prime before painting. Any standard primer works on PLA. Then paint the rim to match the rest of your army.🧲 Planning magnets? Fit them to the original base first, then drop the base into the converter.⚖️ Worth Knowing• These are 3D printed. You'll see fine layer lines on the sides. They disappear under primer and basing, but they're not as smooth as injection-moulded plastic.• PLA doesn't like heat. PLA is stiff and holds accurate dimensions, which is why we use it for converters, but it can soften if left somewhere very hot — like a car dashboard in summer. Store your army out of direct sun.• Your base sits 1mm higher. The base rests on a 1mm floor and the end stops are 6mm tall, so depending on your original base there may be a small step at each end. Texturing the end stops to match your basing makes it barely noticeable.• The sides are open by design. That keeps the width at exactly 60mm. The long edges of your base stay visible, so paint them to match the end stops.• Starting a new army? If your models aren't based yet, our 120 x 60mm bases are the simpler choice. Converters are for models already on 60 x 100mm.🚚 Shipping📦 Orders placed before 3 PM (Mon–Fri) are dispatched the same working day from our workshop in Derby.🛒 Combined postage — add bases, other converters or movement trays to the same order and pay postage once.🚀 Larger orders get a free upgrade to Royal Mail 24 Tracked.Hobby HeavenBy Hobbyists. For Hobbyists.Designed and printed in Derby as part of the Open Basing System — bases, converters and trays that work together, so you're never locked into one base size. Got a size we don't make yet? Message us — the range grows from customer requests.

Specifications

Choose Quantity 25
MPN CON/RE/100x60-120x60
Suitable For Wargaming, Model Display, Dioramas
Base Type Rectangle
Colour Black
Brand Hobby Heaven
Type Base Converter
Surface Finish Open-Sided Pocket, Bevelled Edge
Features Bulk/Lot
Country/Region of Manufacture United Kingdom
Country of Origin United Kingdom

ABOUT US

Welcome to Hobby Heaven!

We're a brand built by passionate hobbyists for hobbyists. Our mission is to support all your creative endeavors, whether you're into modeling, wargaming, crafting, or art. As enthusiasts ourselves, we understand the importance of quality supplies at affordable prices.

Our carefully curated selection of high-quality materials is designed to inspire and empower hobbyists and artists alike. We're particularly proud of our innovative, cost-effective basing system - a game-changer for modelers and wargamers looking for professional results without breaking the bank.

At Hobby Heaven, we're dedicated to providing exceptional customer service and ensuring your creative projects are a success. Our team is always ready to offer advice, share techniques, or help you find the perfect supplies for your next masterpiece.

Thank you for choosing us as your trusted partner in creativity. We're excited to be part of your hobby journey!

PAYMENT

We accept payment by PayPal and Credit / Debit cards entered on eBay only. You must be registered with PayPal or eBay to buy from us.

SHIPPING

We primarily use RM24 for shipping, and we can arrange other courier services upon request. For large international shipments, we utilize FedEx. Once your order has been dispatched, you will receive tracking information. For domestic deliveries, the estimated arrival time is usually 1-4 days.

RETURNS

Please ensure that all items are returned in their original condition. Returns are processed within 1-2 business days of receipt. Refunds are issued minus the original shipping cost. All returns are handled in accordance with eBay's policies.

At Hobby Heaven, we strive to provide our customers with the best possible online shopping experience. Our commitment to excellent customer service extends well beyond the delivery of your order.

We encourage you to reach out with any questions or concerns regarding your purchase. The most convenient way to contact us is through the eBay messaging system.

Our dedicated customer service team responds to messages within 24 hours, Monday through Friday, between 8:00 AM and 3:00 PM GMT.

Your satisfaction is our top priority. We're here to help and look forward to assisting you!

WHAT OUR CUSTOMERS ARE SAYING ABOUT US

Good quality item great value and does what it says	law4427 (257 )
Order delivered on time with no issues	spruetwo (244 )
Order delivered on time with no issues	tree1243 (2206 )
Order delivered on time with no issues	portal_immor (216 )
Order delivered on time with no issues	julma8824 (1 )