Not correction: coarse is absent, and over-applied filler or heavy ridges belong to the correction pair or the sanders line at scale.
Not corner cutting: its edges are deliberately dead — a corner that needs grit worked into the angle wants the 4-sided blocks' coated edges.
Not flatness: foam follows; planes are the 45395's business.
Not rooms: taped joints at wall scale are pole-sander work.
And not a current catalog recommendation: for new specification the line's live fine/medium is the 45350 — this page serves the block already in a pocket, honestly.
the 2-3/4" × 4" footprint disappears into a cupped palm — face work under the flat of the hand, detail passes driven from the fingertips. Pressure: light; foam cuts where it compresses, and a small block concentrates an unwary hand fast. Faces: confirm fine vs medium by touch at pickup — the rungs are adjacent, and a stage run on the wrong face is rework. Edges: remember which surfaces do not cut and use them — the dead edge against finished planes is this block's signature move. Dust: damp method for occupied rooms; N95-class respirator floor for dry compound sanding, per the abrasives line doc's evidence base (NIOSH 99-113); pre-1978 painted surfaces are EPA RRP territory before any sanding (EPA RRP).
Asked before buying
BUYER QUESTIONS, ANSWERED BEFORE YOU ORDER
Do its edges sand?
No — two sanding sides means the two big faces only. The bare edges are the feature: a non-scratching margin against adjacent finished planes, which the 4-sided generation gave up.
What numbers are "fine" and "medium"?
None are claimed . The line's one anchor — the 09083's official "150 Medium" — sets the medium class at 150; fine is relational: shallower, pre-prime. No number prints here until a claim exists.
What is the abrasive?
Unstated — foam construction is corroborated, but the mineral claim in this line belongs to the 4-sided pair alone.
Can I use it wet?
Yes, by claim: "Use wet or dry for flat or contour sanding. Rinse to clean." Section 2a is the method at this block's grain.
Can it handle heavy filler?
No — no coarse rung. Open correction on the medium/coarse side of the pocket system (the documented live block is the 45360) and meet this block at the shared medium rung.
Should I still use it?
A block in hand is claims-backed, washable, and fully competent at its three jobs above. Specify the live 45350 for the future; work this one honestly for as long as rinsing keeps reviving it.
Is it discontinued?
Yes — the store title says so, and this guide leads with it. No claim declares a replacement ; the line's live fine/medium block is the 4-sided 45350, positioned as where the family went, not as an official successor.
