ReplacementParts.app › How-to guides
Practical, sourced guides for getting a broken or discontinued part replaced, from the model number to the material.
Each guide opens with the short answer, then shows the steps. Every figure links to its source, listed at the end of the page.
Start with the manufacturer: many parts are still sold, and in the EU some must be. When a part is no longer made, a maker on The Spool List can often remake it from your photos and measurements.
Look for the rating plate or label: inside the door or on the door rim of washing machines and dishwashers, inside fridges, on the back or base of small appliances and electronics, and on the frame of a bike. Photograph the whole label, then enter the model number on the manufacturer's spare-parts page. The model number identifies the product; the part number identifies the piece.
Measure in millimetres with calipers: the overall length, width and height, every hole diameter and the distance between hole centres, the wall thickness, any thread size and pitch, and for a gear the tooth count, outside diameter and bore. Measure the intact parts, not the broken edge, and measure whatever the part clips onto as well.
Take straight-on photos of each side, one three-quarter view, one photo with a ruler or calipers beside the part, close-ups of every clip, hole and moulded number, and one photo of where the part fits in the product. Use daylight or a bright lamp and a plain background that contrasts with the part.
Choose by where the part lives. PLA is for indoor, cosmetic parts and test fits: Prusa says it softens above 60 °C. PETG suits most clips and brackets indoors and out below 80 °C. ASA is the outdoor choice, with UV resistance up to 93 °C. Nylon is for gears, hinges and other parts that rub or wear.
Do not have a part remade if its failure could hurt someone: vehicle brakes, steering, suspension, seat belts, wheels and airbags; anything on a gas appliance; mains-electrical parts; pressure and high-heat parts; children's safety products; medical and mobility devices; and anything that carries a person or an overhead load. Buy certified originals and use a qualified professional.
Compare the full repair cost (part, labour, delivery) with the price of a new product. French research cited by BEUC found people generally repair only when that stays within 20–30% of the original price; an older rule of thumb says replace above 50%. Before deciding, check your guarantee, the official part price, any local repair bonus, and whether a maker can remake a small discontinued part.
Broken part in your hand?
Post the part free on The Spool List. Makers quote with a price and a lead time, and the platform holds your payment until you confirm delivery.
Post photos and measurements once and compare quotes. The maker is paid only after you confirm delivery. Own a printer, lathe or CNC? List it free.
Post a job — it's freeOr get The Spool List app: