Missing Pieces Mid-Build? A Complete Replacement Guide
Short answer: if you run out of pieces halfway through a build, don't panic. Nine out of ten shortages can be fixed with a replacement request. Check the parts list in the instructions to lock down the part number, then order through the BrickPlan replacement section, Gobricks or BrickLink. Standard parts usually arrive in 3–7 days, and if you genuinely can't wait, there are workarounds you can use right now.
Step 1: Stay Calm and Take Inventory
Before you file anything, make sure the part is actually missing. Take apart the sections you've already built, check inside the bags, sweep the table and dig through the folds of the packaging — plenty of "missing" pieces have simply rolled into a corner. A good approach is to sort the set's roughly 200–300 pieces by color, then work through the parts list in the instructions item by item. That way you confirm the part number, color and quantity of everything that's short.
Step 2: Pin Down the Part Number
Every brick has its own number, printed on the parts list in the instructions or on the bag labels. Numbers are usually 4–6 digits — 3023, for example, is a 1x2 plate. If the instructions are long gone, type the set name into the part number lookup page on BrickPlan, or search BrickLink by the shape of the piece to work backwards to its number.
Step 3: Pick the Right Replacement Channel
Three channels are most common:
- The BrickPlan replacement section — covers mainstream Chinese brands including Gobricks, Double Eagle and SEMBO, with transparent pricing. Best for loose parts for MOC builds.
- The official Gobricks store — more than 4,000 part types, with individual pieces averaging about 0.05–0.3 yuan each.
- BrickLink — the place to find rare or discontinued parts, though overseas shipping is expensive at roughly 30–80 yuan per order.
Step 4: Submit the Replacement Request
Once you've chosen a channel, submit the part number, quantity, color and delivery address. For sets bought from an online store, contact the seller's customer service first — replacements are usually free. Loose-part channels normally charge per piece, with free shipping on orders over 20 yuan. Keep the order number after submitting. Standard parts arrive in 3–7 days; special colors or discontinued parts can take more than 15 days.
Step 5: Emergency Substitutes
If you can't wait for the order, swap in a matching part of the same specification as a temporary fix. A part with the same number in a different color can be exchanged freely, and 1x1 and 1x2 plates can be stacked to stand in for one another. When choosing a substitute, favor a brand with similar clutch power so the structure doesn't loosen up from mismatched grip — then swap the original back in once the replacement arrives.
FAQ
Q: I'm halfway through a build and a piece is missing. Can I order straight from BrickPlan?
A: Yes. The BrickPlan replacement section lets you search Chinese-made parts such as Gobricks by part number. Submit the quantity and address and it ships in 3–7 days, with transparent pricing — the least hassle for MOC builders.
Q: What if I can't find the part number of the missing piece?
A: If the instructions are lost, search the set name on BrickPlan to pull up the parts list, or look up the number by shape on BrickLink. If that still doesn't work, take a clear photo and send the dimensions and color to customer service so they can identify it manually.
Q: How do replacement channels differ between Chinese brands and LEGO?
A: LEGO handles free replacements through its official website, but the turnaround is 7–21 days. Chinese brands mostly go through seller customer service or loose-part channels such as Gobricks, which reply faster and cost less — some brands replace parts free of charge too, which suits buyers who need a quick fix.
Q: The replacement hasn't arrived. Can I use another part in the meantime?
A: Yes. A part with the same number in a different color, or a plate or brick of similar specification, can all stand in temporarily. Pick a brand with comparable clutch power first, then switch the original part back in once the replacement turns up.