A strong MOC design is only the beginning. To turn a digital model into a sellable kit, every element in the bill of materials must be matched, tested, counted and packed in the correct build order. TOSTUDY helps independent creators and studios convert original parts lists into complete small-batch building-block kits.
Why MOC parts-list sourcing becomes difficult
A model may contain hundreds of part-and-color combinations. One unavailable element can delay the entire kit, while an unsuitable substitution can change appearance or function. Creator projects also need quantities far below conventional toy retail programs. The right supplier therefore does more than sell loose bricks: it coordinates the BOM, component availability, color, clutch, kitting and packaging as one project.
TOSTUDY supplies independently manufactured compatible components. We do not supply genuine LEGO parts and are not affiliated with the LEGO Group.
What to include in your sourcing brief
- Current BOM: part description, size, color and quantity per set.
- Original design files: renders, assembly sequence or authorized reference images.
- Order plan: prototype count, pilot batch and possible reorder volume.
- Substitution rules: which colors or shapes may change and which are essential.
- Delivery format: bulk components or numbered bags, spare parts, instructions and retail box.
For functional models, identify gears, axles, pins, hinges and high-load connections early. Our professional component service can review these separately from decorative pieces.
From BOM to complete kit
| Stage | Supply-chain work | Approval point |
|---|---|---|
| 1. BOM review | Normalize names, colors and quantities; flag unclear or unavailable items. | Confirmed sourcing list |
| 2. Matching | Match stocked parts and propose practical compatible alternatives. | Substitution approval |
| 3. Sample | Build or pack a test set to check fit, appearance and completeness. | Physical sample |
| 4. Instructions | Align bag numbers and spare pieces with the assembly sequence. | Final files and packing plan |
| 5. Production | Source or produce parts, sort, count and inspect them. | Pre-shipment check |
| 6. Delivery | Pack complete kits and consolidate cartons for shipment. | Shipping documents |
Where our supply-chain advantage matters
Small-batch MOC projects rarely depend on one machine or one component. Their real difficulty is coordinating many standard parts with a few special requirements. TOSTUDY combines parts matching, custom colors or printing where feasible, manual and packaging preparation, and final kitting under one quotation path. This reduces the number of suppliers a creator must manage.
We also separate standard sourcing from genuinely custom work. Using available elements for most of a design can keep a pilot economical; printing, a unique color or a new mold can then be reserved for the feature that makes the product distinctive. MOQ is evaluated by process—not presented as a misleading universal number.
Quality checks for a kit customers can finish
- Fit and clutch consistency across common connections.
- Functional checks for gears, pins, axles and moving assemblies.
- Color comparison when components come from different batches.
- Surface inspection for burrs, deformation, scratches and contamination.
- Count or weight checks followed by BOM verification.
- Bag-number and instruction checks against the approved build sequence.
Frequently asked questions
Can you quote from an exported digital parts list?
Yes. Send the exported file and the number of complete kits required. We will return questions and substitution options before final pricing.
Can I begin with a prototype?
Yes. A sample is the best way to verify fit, color and instructions before a pilot batch.
Can you pack numbered bags and provide instructions?
Yes. We can align numbered bags, spare pieces, instructions, inserts and custom packaging through our custom solutions service.
Turn your parts list into a complete kit
Send your original BOM, target quantity and destination. We will suggest a practical small-batch sourcing route.
LEGO® is a trademark of the LEGO Group. TOSTUDY is independent and is not affiliated with, sponsored by or endorsed by the LEGO Group. Submit only designs and intellectual property you own or are authorized to use.