Description
Overview:
Engineers Blue Paste for Marking Work is a non-drying, oil-based pigment paste used to reveal high spots and contact areas when fitting and aligning metal parts. Supplied in a compact 38 g jar, it spreads into an ultra-thin blue film that cleanly transfers to raised points, helping you scrape, lap, or adjust parts to a precise fit. The deep blue colour provides clear contrast on ferrous and non‐ferrous metals, making it suitable for toolrooms, workshops, and site work. Commonly used with surface plates, straight edges, V‐blocks, arbors, shafts, and mating flanges, it supports accurate assembly on mills, lathes, and general fabrication setups. Composition: oil-based carrier with fine blue pigment (Prussian blue). Manufacturer Part Number (MPN): 902 3050.
Key Features:
- Non-drying blue pigment paste that stays workable during setup and inspection
- Forms a very thin, even film for precise transfer marking of high spots
- High visibility on steel, cast iron, aluminium, and brass for easy reading of contact
- Smooth, consistent texture; apply by fingertip, pad, or a soft brush
- Helps achieve accurate scrape-fitting, lapping, and alignment of mating surfaces
- Useful with surface plates, straight edges, V‐blocks, mandrels, and shafts
- Aids in checking taper fits, bushings, keys/keyways, and flange faces
- Cleans off with standard workshop degreasers or solvents after inspection
- Compact 38 g jar is easy to store in the toolbox and economical for regular use
- MPN 902 3050 for straightforward identification in the workshop
Typical Applications:
Spotting and scraping slideways and dovetails, checking contact on bearings and housings, verifying flange flatness on pumps and gearboxes, assessing taper and press fits, aligning fixtures and jigs on milling and turning setups, and lapping valve seats on small engines. Ideal for precision fitting, refurbishment, and maintenance tasks where accurate metal-to-metal contact is required.
Also known as:
Spotting blue, Prussian blue marking paste, bearing blue, transfer blue, contact blue, scraper's blue, marking compound for scraping, and high-spot paste.
Product Specifications
| L&S Part No. | 902 3050 |
|---|---|
| Unit of Sale | 1 |
| Size | 38 Gram |
