Printing a Custom LED Sill Proof at Actual Size: What Paper Can and Cannot Verify
Printing a custom sill proof at actual size can catch a misspelled word or a logo that feels too crowded before production. It is a valuable artwork check, but it is not a physical fitment test. The paper does not become a metal plate, and a printout cannot verify the vehicle threshold, adhesive surface or wiring route.
What “actual size” should mean
Use the artwork file or production template supplied for the selected product. Print at 100% scale with “fit to page” disabled. If the file has no confirmed physical scale, a 100% print only preserves the file’s current dimensions; it does not invent the sill’s dimensions. Ask support for the approved scale or template rather than estimating from a screen.
What the paper proof can verify
- Spelling, capitalization and the exact wording.
- Logo orientation and left-to-right direction.
- Relative spacing between a mark, text and open areas.
- Whether small counters and cutouts remain visibly open at the printed scale.
- Whether the artwork is positioned as intended inside the supplied proof boundary.
Place a ruler beside the print and photograph the full sheet. Keep the file name and version with the image so a later revision cannot be mistaken for the approved proof.
What the paper proof cannot verify
| Question | Why paper is insufficient |
|---|---|
| Will the plate fit the vehicle? | The proof does not measure the flat painted-metal threshold, seal contact, door clearance or bends. |
| Will the artwork illuminate correctly? | Paper cannot show LED zones, edge glow, color behavior or brightness. |
| Will adhesive and wiring work? | The print does not show the mounting surface, trim route or door-trigger connection. |
| Is the product available in that configuration? | Artwork approval does not create a product option or confirm a custom order. |
Use the exact product as the reference
For a Mustang S550 Running Horse project, keep the proof tied to the exact Matte PRO record or Stainless record selected for the order. Those records identify the physical application and published artwork; they do not publish a universal blank template for every custom request.
Send the actual-size proof for production review when a custom variation is being considered. Ask the team to confirm the artwork version, then keep that response with the order. The proof should support a design decision, not replace a vehicle fitment review. The existing artwork-limits guide gives a useful reminder that a computer preview is not an approval; this sill workflow adds the ruler and scale check.
Keep scale and fitment as two sign-offs
Mark the paper proof as an artwork sign-off only. A separate vehicle review should confirm the threshold and the selected plate path. Keeping those approvals separate prevents a perfectly printed logo from being treated as permission to alter the plate outline, ignore the seal or invent a physical dimension.
FAQ: Does a 100% print prove the sill will fit?
No. It proves only the printed artwork’s scale relative to the supplied file or template. Confirm the vehicle application, threshold geometry and physical product separately before ordering or installing.
