The ProDec Scale Tang Filling Knife is a trade quality filling knife built to last longer and work better than the half-tang knives you’ll find in DIY sheds. The stainless steel blade is machined to a fine, thin profile so it flexes naturally when pushing filler, sealant or putty into cracks and holes — giving you a smoother result with less effort.

What sets it apart is the full tang construction: the steel blade runs all the way through the handle rather than stopping at the neck. That’s the point where cheaper knives snap. Here, it won’t. The blade is mounted into a premium varnished hardwood handle that’s ergonomically shaped for comfortable use and keeps heat transfer low if you’re using a blowtorch to strip coatings.

Key Features of the ProDec Scale Tang Filling Knife

• Full tang blade — steel runs the full length of the handle, eliminating the weak point where cheaper knives snap
• Stainless steel blade, machined to a thin, flexible profile
• Designed for pushing filler, sealant and putty into cracks and holes
• Premium varnished hardwood handle, ergonomically shaped for comfortable grip
• Handle minimises heat transfer when using a blowtorch
• Hanging hole for easy storage

Where to Use the ProDec Scale Tang Filling Knife

• Filling cracks, holes and surface blemishes in walls, ceilings and woodwork
• Applying and smoothing filler, putty or sealant
• Spreading and feathering filler to a flush, smooth finish
• Light scraping when used at a shallower angle — though for heavy scraping, the ProDec Scale Tang Paint Scraper (thicker, stiffer blade) is the better choice

How to Use the ProDec Scale Tang Filling Knife

1. Choose the right size — a narrower blade for small cracks and pin holes, a wider blade for larger areas
2. Load filler onto the blade and press it firmly into the crack or hole
3. Draw the blade across the surface at a shallow angle to leave the filler flush
4. Allow the filler to dry fully before sanding back lightly and painting
5. Clean the blade thoroughly after use to prevent filler drying on the steel

Sizes Available

Available in 1″ (25mm), 2″ (50mm), 3″ (75mm) and 4″ (100mm). Use the 1″ or 2″ for fine cracks and pin holes; the 3″ or 4″ for larger repairs and skim-filling wider areas.

Safety & Restrictions

• The blade is sharp — store safely and keep away from children
• Take care when using a blowtorch near the handle — while the hardwood minimises heat transfer, prolonged heat exposure will damage the handle
• Not designed for heavy-duty scraping — use the ProDec Scale Tang Paint Scraper for that