With a blade thickness of 0.5 mm, Tamiya 74138 is the widest blade in his scribing range. The tungsten carbide edge serves plastic-model scribing where a broader recessed detail is wanted, whether the line is newly engraved or an existing feature is cut again. It must be mounted for use, and its handle is Item 74139 Engraving Blade Holder, sold separately.
Shank diameter: 2 mm
The pack contains one blade
White is the identification colour for this thickness, and the supplied case stores up to ten blades
03
Notes · Q & A
What blade shape should I use for miniatures — #10 or #11?+
The #11 pointed blade is the default for trimming mould lines and fine cuts. The curved #10 belly suits slicing and scraping over larger areas. Most modellers keep an #11 in the handle and swap shapes as the job needs.
When should I change a blade?+
The moment it drags, tears plastic instead of slicing, or needs pressure to start a cut. A blunt blade slips and causes most knife injuries, and blades are far cheaper than the finger you save. Snap old ones into a sealed tin.
What's a razor saw for that a knife can't do?+
A razor saw removes thick sprue gates, cuts resin blocks and separates parts too chunky to slice cleanly. Its fine kerf leaves a flat face with minimal material loss, where a knife would slip or wander on a thick section.
How do I scrape mould lines rather than cut them?+
Hold the blade at 90 degrees to the surface and draw it backwards, shaving the raised line in light passes. Scraping controls depth far better than cutting and leaves a smooth surface that needs little or no sanding.
04
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.
02
Table · Specification
Technical specifications
Product details
Brand
Tamiya
Product code
74138
Type
Tools
Tool type
Engraving blade
Shipping weight
80 g
Barcode
4950344741380
Made in
Japan
Dimensions & contents
Blade thickness
0.5 mm
Shank diameter
2 mm
In the box
1 fine engraving blade, Storage case for up to 10 blades