Summary

Once a design is in your Cart, each line item has Quantity controls, an Edit design button, and a menu with Duplicate and Remove. Quantity and pricing update live and correctly. Duplicate and Remove work correctly. Edit design does not — see Warnings and limits.

Use it when

  • Use Duplicate to add a second copy of a cart line item as its own separate entry (for example, to set a different quantity or edit it independently later).
  • Use Quantity to change how many copies of a line item you're ordering.
  • Use Remove to take a line item out of the cart entirely.

Before you begin

Have at least one design added to your cart — see Proof links, cart, and checkout for how to get there.

Steps

  1. Go to Cart.
  2. Select + or next to a line item's Quantity to change how many copies you're ordering.
  3. Open the menu on a line item and select Duplicate to add a copy of it as a new, separate line item.
  4. Open the menu and select Remove to delete that line item from the cart.

What changes

  • Quantity changes the line item's total using the stated per-item pricing ($50.00 first copy · $25.00 each additional) — confirmed directly: increasing quantity from 1 to 2 changed a line total from $50.00 to $75.00 exactly, and the cart's Merchandise and Order total updated to match.
  • Duplicate adds a new line item named after the original with a — copy suffix (e.g. Classic square #1 — copy), at the same price, confirmed to correctly increase Merchandise by the duplicated item's price.
  • Remove deletes the line item and the cart briefly shows a Verifying cart items and current prices… state before settling on updated, correct totals.

Print note

Not applicable — cart quantity, duplication, and removal only affect what you're ordering, not any exported file.

Warnings and limits

  • "Edit design" does not work. Selecting it navigates to /editor, a route that doesn't exist (the page title reads Page not found), and it does not load the cart item's design back into the editor — the artboard comes up completely empty (No layers yet). Reproduced twice, independently. Filed as issue #51. Until this is fixed, if you need to adjust a design that's already in your cart, rebuild it from your original file, a proof link, or an exported copy — don't rely on Edit design to bring it back.
  • "Reorder past creations", described in the app's own marketing copy, requires order history from a completed order. This was not tested — completing an actual purchase is outside the scope of this research. Treat reordering past orders as Needs product confirmation.
  • Cart contents in this article were tested as a guest, without signing in — see Cloud drafts and accounts for what's unverified about signed-in behavior.

Desktop and mobile

Quantity, the menu (Duplicate/Remove), and Edit design were all confirmed present and reachable on both desktop and mobile — the Edit design issue was found on desktop; it was not independently re-tested on mobile, but there is no reason to expect the underlying routing bug to differ by viewport.

Troubleshooting

Symptom Likely cause Recovery
Edit design shows a "Page not found" title and an empty editor A confirmed, reproduced bug as of this verification date (issue #51) Don't rely on it — rebuild the design instead of trying to resume it from the cart
Cart total looks wrong right after removing an item The cart briefly shows a transitional state while re-verifying Wait a moment for Cart verified and prices are current. before checking totals
A duplicated item has the same name as the original Expected — it's suffixed — copy to distinguish it Check the full line item name, not just the format

Related topics

  • Proof links, cart, and checkout
  • Device recovery
  • Cloud drafts and accounts
  • Production readiness

Verification note

Verified against Blotter Builder on 2026-07-22.

Source notes

Primary observations — all from the live application at https://blotterbuilder.tdl.fyi, 2026-07-22, tested as a guest (no account signed in).

  • Observed — increasing a line item's Quantity from 1 to 2 changed its line total from $50.00 to $75.00, and Merchandise/ Order total updated correspondingly.
  • Observed — selecting Duplicate added a new line item labeled Classic square #1 — copy, at the same per-copy pricing, and increased Merchandise by that item's price.
  • Observed — selecting Remove on the duplicated item removed it; the cart showed Verifying cart items and current prices… briefly, then Cart verified and prices are current. with corrected totals.
  • Observed — selecting Edit design navigated to /editor (document.title became Page not found — Blotter Builder by TDL), and the resulting page's Layers panel showed No layers yet rather than the cart item's design. Reproduced twice, independently. Filed as issue #51.
  • Observed — at 390 × 844, Quantity, the menu, and Edit design were all present on the cart line item.

Verification log

Viewport Steps tested Observed result Date
1280 × 800 Increase quantity on a line item Line total and cart totals updated correctly 2026-07-22
1280 × 800 Select Duplicate New — copy line item added at the same price 2026-07-22
1280 × 800 Select Remove on the duplicate Item removed; totals re-verified and corrected 2026-07-22
1280 × 800 Select Edit design (two independent attempts) Both times: /editor 404 title, empty editor, design not restored 2026-07-22
390 × 844 Check presence of Quantity, menu, Edit design All present 2026-07-22