Custom Masking Fabrication — From Drawing to Part

Common requests· 01

Common custom fabrication requests.

The custom work that crosses our engineering desk falls into a few recurring families. Custom-diameter silicone plugs and caps top the list — a hole size that standard ranges skip, a non-standard thread, a flange that must clear a fixture. Molding to the exact dimension removes the daily improvisation of stretching or stacking standard parts.

Die-cut programs come next: shapes, dots and rings cut to a drawing so line operators place one part instead of cutting tape. Printed and color-coded tapes follow — size identification, process routing, brand marking. And increasingly, complete masking kits: every mask one part number needs, counted and bagged per assembly, so coverage stops depending on who is on shift.

If your request is not on this list, send it anyway. The materials and processes above combine into more solutions than any catalog page can enumerate, and DFM feedback costs you nothing.

Fabrication capabilities· 02

What we can make.

Tape slitting & rewinding

Custom-width rolls slit from master rolls of PET, polyimide, washi, crepe and specialty films — short lead times, no tooling.

Silicone compression molding

Custom plugs, caps, grommets and vent parts molded to your drawing, including non-standard diameters, threads and flange shapes.

Precision die-cutting

Shapes, dots, rings and labels cut from any tape or film we stock, registered to your dimensions for repeatable line-side application.

Printing & marking

Logo printing, color coding and lot marking on tapes and molded parts, so operators grab the right mask at a glance.

Kitting & assembly

Per-part-number kits combining plugs, caps, tape and die-cuts, packed and labeled so masking is repeatable across shifts.

Cleanroom-compatible packing

Cleaned and sealed packaging options for electronics and finish-critical work, plus standard export packing on every order.

Custom workflow· 03

Four phases from RFQ to shipment.

01
Send drawing
PDF, DWG, STEP or clear sample photos with key dimensions.
Day 0
02
DFM feedback
Material, tolerance and cost feedback from engineering before you commit.
1–2 days
03
Sample approval
Sample or first-article photos for confirmation.
Confirmed per project
04
Batch production
Production, inspection, packing and shipment with documents.
Confirmed per quote

Workable materials· 04

Materials we fabricate.

Material	Forms we fabricate	Typical duty
Silicone	Molded plugs / caps / grommets / vent parts	Repeated oven cycles to ~250°C
EPDM rubber	Molded caps and plugs	Plating and e-coat below ~150°C
PET film	Slit rolls / die-cut shapes and dots	Powder coating to ~204°C
Polyimide film	Slit rolls / precision die-cuts	Electronics and high heat to ~260°C
Washi & crepe paper	Slit rolls / die-cut discs	Refinish and fine-line work
Aluminum foil	Slit rolls / shaped masks	Thermal spray and flame spray

Other materials on request — send the process conditions and we will confirm feasibility.

File formats· 05

Send what you have.

PDFDWGSTEPIGESSample photos

Upload small reference files in the inquiry form. For large CAD packages or many files, emailsales@leadermasking.com after submitting and mention your company name or product.

Confidentiality· 07

Your drawings stay your drawings.

We sign NDAs on request. Drawings and samples are used only for quotation and production, are never shared with third parties, and are deleted on request after the project closes.

FAQ· 08

Custom fabrication questions.

What is the minimum order for a custom molded part?

It depends on the tooling: simple plug and cap molds justify smaller runs than complex geometries. Send the drawing and target quantity and we will quote both tooling and per-part price transparently.

How long does custom tooling take?

Simple compression molds are typically ready in 2–3 weeks; die-cut tooling is usually faster. Slitting custom tape widths needs no tooling at all.

Can you reverse-engineer from a worn sample?

Yes — a sample part or clear photos with a few key measurements are enough to start. We confirm the reconstructed drawing with you before cutting any tool.

Do I own the tooling I pay for?

Tooling paid by the customer is reserved exclusively for that customer's orders. We document and store it; ask for the tooling terms with your quote.

Can you mix custom and standard parts in one kit?

That is the most common kit structure: standard plugs and tape plus one or two custom die-cuts, bagged per assembly and labeled with your part number.

Have a drawing ready? Get DFM feedback.

Attach small drawings, sample photos or PDFs in the form below. For large CAD packages, send them by email after the inquiry so we can match the files.