BAYCAR · Blog
Cord lock and drawcord compatibility: 6 sample checks
A drawcord passing through a cord lock does not, on its own, show that the combination will work properly in use. The cord should adjust as intended, remain in the selected position as required and avoid damage during operation. Complete your cord lock selection with a sample check using the actual drawcord.
This guide gives textile design, purchasing and production teams a six-step checking plan. Start by shortlisting references from the Baycar cord lock collection, then compare each model using the same cord and use scenario.
1. Separate body dimensions from the cord opening
The external dimensions describe how much space the cord lock will occupy on the product. The cord opening measurement concerns the passage through which the cord runs. Record these separately; do not assume that a larger body always suits a thicker cord.
Specify the diameter for round cord, or both width and thickness for flat cord. An opening measurement shown in a catalogue is not an automatic compatibility approval for a particular cord. Confirm which opening and operating position the measurement describes for your selected model.
2. Use the actual cord and threading arrangement
Cords with the same nominal size can differ in braid, surface and compressibility. Test with the cord intended for production rather than another cord that looks similar. If the cord has not yet been selected, consider the drawcord and cord-end collection alongside your cord lock options.
Show on the sample whether one cord or two strands will pass through the lock and the route they will take. Do not treat two strands through one opening as equivalent to strands through separate openings. Forcing the cord through, stripping its fibres or attempting to alter the body should not be recorded as a successful fit.
3. Observe adjustment and holding separately
Confirm with the supplier how the selected model operates. In the model’s adjustment position, check cord movement in the intended direction; in its holding position, observe how it retains the setting. Easy sliding and adequate holding are separate checks: a good result in one does not prove the other.
Try the sample at the actual adjustment point on the product. Operate it several times and note any sticking, uneven movement, marks on the cord or changes in position. Set the number of repetitions, applied force and acceptance limits in your product quality plan rather than using one threshold for every cord lock. These observations do not replace a durability test or conformity documentation.
4. Check it with the fabric, eyelet and cord end
Assess the cord lock with the fabric and other accessories, not just on a table. During adjustment, observe contact between the body and the fabric, access to the operating area and any catching between components. A sample that represents the user's movement provides more information than inspecting the empty body alone.
If a capsule cord end will be fitted, agree the assembly order as well: will the end be attached before or after threading the cord through the lock? If the finished capsule needs to pass through, check that with a physical sample. For details on this finishing component, see the capsule cord end selection guide.
5. Repeat the checks after planned care processes
After the washing, drying or other care processes specified for the product, repeat the same adjustment and holding checks. Compare colour, surface, mechanism movement and cord condition with the earlier sample. A result without a record of the process applied is not a sufficiently clear reference for later orders.
Confirm material, surface treatment and care compatibility separately for the selected reference. A metallic appearance in a photograph does not prove the body material or coating durability. Address safety and conformity requirements for the intended use separately within your own product assessment process.
6. Turn the approved sample into a reusable record
Rather than recording only a pass or fail, document the combination you checked. Even when the cord lock stays the same, a different cord, colour or application may need a new assessment. Give each sample an identifier and keep the following information together:
- Cord lock reference, colour, body dimensions and opening size
- Cord reference, dimensions, construction and the sample used
- Single- or double-strand arrangement, threading direction and assembly order
- Position on the product and other accessories used with it
- Adjustment, holding and after-care observations, with the checking method
- Approved sample identifier, date and reviewing team
Include this record in your order enquiry together with quantities by model and colour. Confirm stock, minimum order, sampling conditions, price and lead time separately. Do not assume that the terms of an earlier order for the same reference still apply.
Frequently asked questions
If the cord passes through, is the lock suitable? Passing through is only the first step. Adjustability, position holding and behaviour on the product also need assessment with the actual cord.
Can you determine the suitable cord diameter from the body dimensions? No. The external body and internal passage are different measurements; use a physical sample alongside the catalogue information.
Does one sample approval cover every colour and cord? The approval record should state which combinations were assessed. Your quality team should decide whether changed options need further checks.
Prepare a shortlist with clear information
A cord lock with known dimensions, the actual drawcord and a recorded sample assessment make purchasing discussions more specific. Share the references you select from the cord lock collection, cord details and intended position with Baycar to clarify current options and sampling conditions.