Do You Need Extra eitech Accessories, or Is the Set Enough?

Quick answer

If you build the model exactly as the manual shows and leave it assembled, your set is enough — you don't need to buy anything extra. Buy extra eitech parts when you want to rebuild the same kit into your own designs, replace a worn or lost piece, or add a mechanism the original instructions never included. Start with a small handful of high-wear parts rather than a big assortment.

Every eitech kit ships with the parts needed to complete the model on the box. The question of whether you need more only becomes real once you go past that first build — when you take the model apart, lose a screw under the sofa, or decide the crane should actually lift something.

This is a practical FAQ for that moment. Below are the questions builders ask most often about extra eitech accessories, answered directly, with honest guidance on when an add-on is genuinely useful and when it just sits in the drawer.

When is the set genuinely enough?

A set is enough when your goal is the pictured model, built once and displayed or played with gently. eitech counts the parts for that build, so the instructions work without substitutions. If you follow the steps in order and keep the pieces together, you will not run out.

The set also stays sufficient if you rebuild the same model rather than inventing new ones. Disassembly and reassembly of the same design uses the same parts in the same places. The moment your plans change — a taller tower, a second axle, a different wheel size — is when the original count stops matching what you are trying to do.

• Set is enough: one build, as shown in the manual
• Set is enough: repeated rebuilds of the same model
• Set may not be enough: custom designs, repairs, or worn parts

Which extra parts are actually worth buying?

Prioritize parts that wear, get lost, or unlock motion. Small axle bearings and rims are the classic case: they are inexpensive, easy to misplace, and a single missing one can stop a rolling model from rolling. Gears matter if you want to change speed or direction in a way the original instructions did not cover.

Angled plates are the other category worth considering, because they change what shapes you can build rather than just replacing what you already have. A small bag of angled plates in mixed sizes gives you structural options that flat pieces cannot match, especially for corners, braces, and sloped surfaces.

• Buy first: high-wear small parts you are likely to lose
• Buy second: motion parts that add a function you want
• Buy last: bulk assortments you have no specific plan for

How many spares should you keep on hand?

For a single model, one or two spares of each small wear part is plenty. You are insuring against loss and breakage, not stocking a shop. Buying ten of something you have never broken just ties up money in a drawer.

If you build with children, lean toward more spares of the smallest parts, since those disappear fastest. If you build alone and keep parts sorted, fewer spares are fine. The honest tradeoff is that spares cost little individually but add up if you buy them speculatively.

• One or two spares per small wear part is usually enough
• More spares if kids are involved or parts are stored loosely
• Skip bulk buying until you have actually needed a part twice

Do add-on parts change what you can build?

Yes, but only in specific ways. Adding motion parts lets you introduce gearing or a driven axle that the original model did not have. Adding structural parts like angled plates lets you build shapes with bends and braces rather than flat frames.

What add-ons do not do is magically expand a small set into a large one. If you want a fundamentally bigger model, a bigger set is the better purchase. Accessories are for refining and extending, not for doubling your part count.

• Add-ons extend function and shape, not overall size
• For a much larger build, choose a larger set instead
• Match the add-on to a specific idea you already have

What about non-eitech kits in the same catalog?

Some items sold alongside eitech parts belong to different building systems entirely. Brick-and-mortar craft kits, for example, use their own blocks and their own assembly method, so their pieces do not interchange with metal construction parts.

That matters when you are deciding what to buy: check whether a product is a metal construction component or a separate craft kit before assuming it will extend your eitech model. They can sit on the same shelf and still be two unrelated hobbies.

• Confirm the building system before buying an add-on
• Craft kits and metal construction parts do not interchange
• Buy within the system you are actually building

FAQ checkpoints before you add parts to your cart

Are you building the manual model or your own design?

The set covers the manual model. Custom designs are the main reason to buy extra parts. If it is the manual model, you can skip this purchase.

Have you actually lost or broken a part?

Replace what is missing rather than stocking an assortment you may never use. Buy the specific part, not a bundle.

Does the add-on enable a function you want?

Gears and motion parts extend what a model can do; structural plates extend what shapes you can make. Match the part to a concrete build idea.

Is it the same building system?

Metal construction components and separate craft kits do not interchange, even when sold side by side. Confirm the system before checkout.

Relevant parts from the eitech range

• axle bearing 4 mm: Plastic axle bearing from the eitech range, SKU 01810, Standard variant, tagged Manufaktur, intended as a small axle bearing part for suitable model-building or mechanical assemblies. A cheap, easily lost wear part — the kind of spare worth having one or two of if your models roll.
• Gear 30 teeth with bushing module M1: Manufaktur component identified by SKU 01478, presented as described by the available product information. Useful if you want to add or change gearing in a build rather than just replace a part.
• Supplementary bag plates angled: Supplementary set containing various angled plates, 8 pcs, plates (angled) 3x3 to 11x5 hole, described as a supplement to all eitech metal construction kits. Adds structural shapes — corners and braces — that flat plates cannot provide, so it expands design options rather than just replacing parts.
• Rim Ø 25/4 mm, red: Manufaktur component from eitech, SKU 01301 ROT, round rim with a stated diameter of 25 mm and a 4 mm specification, finished in red. A specific-size rim, so check your model's wheel size before buying it as a spare.

Your eitech set is enough for the model it was designed to build. Buy extra accessories only when you have a specific reason — a lost part, a worn bearing, or a design idea the original instructions do not cover. Start small, buy the exact part you need, and let your builds tell you what to add next.