DSPIAE ZPB push broach bits are tungsten steel bits for scribing panel lines into ABS, PS, PE, resin and 3D printed parts. Most broach bits have a trapezoid cutting end, so the line widens each time you go over it. The ZPB is ground to a true 90° straight edge, so repeated passes keep the line the same width. Tolerance is under 0.003 mm; the bits are mirror polished and the edge treated against chipping. Each bit comes in a coloured storage case that doubles as a short handle; for longer work, fit it in a 3.175 mm holder, sold separately.
DSPIAE's guide for panel lines: 0.125–0.15 mm at 1/144, 0.15–0.2 mm at 1/100, 0.2–0.3 mm at 1/60
Shank diameter 3.175 mm
Holder not included
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Notes · Q & A
Sprue cutters or a hobby knife — what do I actually need?+
Cutters remove parts from the sprue cleanly; the knife trims the leftover nub and mould lines. You'll want both — they do different jobs.
What's the difference between single-blade and double-blade cutters?+
Single-blade cutters shear against a flat anvil for an ultra-clean cut with less stress on the plastic; double-blade cutters are tougher for general work.
How do I keep tools in good condition?+
Cut plastic only (never metal sprues or wire) with precision cutters, replace knife blades often, and keep files clear with a brass brush.
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Notes · Logistics
Shipping
Orders placed before 3pm (Mon–Fri) are dispatched the same day. UK delivery is by Royal Mail 24 Tracked. Free UK delivery on orders over £70. International delivery available via Royal Mail International Tracked or courier.
Returns
If you're not happy with your purchase, contact us within 30 days for a full refund or exchange. Items must be unused and in original packaging.