How to Measure a Replacement Part for 3D Printing (UK Guide)
Broken clip? Missing bracket? Lost knob? Replacement parts are one of the best uses of custom 3D printing — but the real secret to a perfect result is good measurements and a couple of clear photos.
This guide shows you exactly what to measure (and how), what to photograph, and what details to send us so we can recommend the right material and get you an accurate quote quickly.
Quick checklist
- Measure the key dimensions (length / width / height).
- Measure any holes, slots, clips, and wall thickness.
- Take 3–5 clear photos (including where it fits).
- Tell us how it’s used (load / flex / heat / indoor or outdoor).
What you’ll need (simple)
- Digital calipers (best) or a good ruler (works for bigger parts).
- A pen + paper (or Notes app) to jot down measurements.
- Your phone camera for photos.
What to measure (in this order)
Start with the basics, then move to “fit-critical” features:
- Overall size: length, width, height.
- Fit features: hole diameter, slot width, clip gap, peg diameter.
- Wall thickness: especially on clips and brackets.
- Angles / curves: note anything that isn’t straight (a photo helps here).
Photos that help us nail the fit
Measurements matter, but photos remove guesswork. If you can, send:
- Front + side of the part (good lighting, plain background).
- Close-up of any clip/peg/slot that does the “holding”.
- Where it fits (photo of the location on the product).
- One photo with a ruler next to it (quick scale reference).
Fit tips (so it doesn’t end up too tight)
Many parts fail because they’re measured “exact”, but the real world needs a tiny bit of breathing room. If something must slide on, clip in, or fit into a slot, we may recommend a small tolerance.
Tell us this and we’ll handle the rest
- Is it meant to be snug or easy to remove?
- Does it need to flex like a clip?
- Will it see heat, moisture, or outdoor use?
Material choice (fast version)
- PLA: tidy finish, great for most indoor parts and light use.
- PETG: tougher for functional parts and regular handling.
- TPU: flexible for grips, bumpers, and parts that need “give”.
What to send us for the quickest quote
Copy/paste this into your message and fill in what you can:
- Part name: (what it is / what it belongs to)
- Measurements: L x W x H + holes/slots/clips
- Photos: part + where it fits
- Use: indoor/outdoor, load, flex, heat
- Quantity + colour: one-off or batch
Ready to get it printed?
Send your measurements and photos and we’ll come back with material advice, pricing, and lead time.
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