What glue should I use for photo-etch?

Use thin CA (cyanoacrylate/superglue) for most PE parts. It bonds metal to plastic instantly. Apply a tiny amount with a fine applicator or toothpick. Avoid poly cement — it does not work on metal. For large PE panels, consider slow-setting CA for repositioning time.

How do I bend photo-etch accurately?

Use a dedicated PE bending tool (like The Hold and Fold or a Trumpeter PE bender). For simple bends, use two flat-nosed pliers. Always bend along etched fold lines. Practice on spare PE before working on critical parts.

Do I need to prime photo-etch before painting?

Yes. Metal PE parts need an etch primer or at least a light coat of metal primer to ensure paint adhesion. Standard plastic primers may not grip bare metal well. Spray a light coat of etch primer on the fret before removing parts.

How long does a PE detail set take to add?

A typical 50-part PE set adds 4-8 hours to a build. Complex sets with folded parts and intricate assemblies can add much more. Budget 3-5 minutes per small part and 8-15 minutes per complex folded part.

ModelCalcs

Photo-Etch Calculator — PE Detail Set Planning

Estimate CA glue and time needed for photo-etch detail sets.

PE Part Count

Number of photo-etch parts on the fret — count the individual pieces, not the frets

Average Part SizePick the typical part size — drives both glue per joint and minutes per part

ComplexityHow much bending/folding the set needs — complex multi-fold parts take ~50% longer per piece

CA Glue Cost per Bottle (£)

Price of one ~20 ml hobby CA bottle (e.g. thin/medium cyanoacrylate)

How We Calculate This

Estimates CA glue consumption and working time based on PE part count, size and complexity.

Formula

CA glue = Part count × Glue per part (by size)
Working time = Parts × Minutes per part × Complexity factor
Total time = Working time × Prep & Cleanup Factor (default 1.3 = +30%)
Bottles = Glue needed ÷ 20 ml (rounded up, minimum 1)

Bottle count assumes a ~20 ml (≈20 g) hobby CA bottle — typical formats run 0.5 oz (~15 ml), 1 oz (~30 ml) and 2 oz (~60 ml); adjust the cost-per-bottle field to your actual bottle. The glue-per-part and minutes-per-part figures are rough planning estimates, not manufacturer data — a single CA drop is ~0.03-0.05 ml and PE joints use sub-drop amounts.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify quantities before purchasing materials.