Not for porous or soft surfaces — wood, drywall, painted trim, plastic, fiberglass, and acrylic all take a scar from a razor; those are jobs for a putty knife or a wall scraper, not this.
Not for broad glass fields measured in feet: the low-profile body is a control tool, and clearing a storefront or a wall of post-construction windows with it is slow where the full-hand Delta™ (13050) is fast.
Not for framed inside corners where a blade needs to be stiff and pointed — a single-edge razor flexes and its corners are square; the utility-blade 13080 owns that reach.
And not a pry bar or a putty remover: a razor edge chips if you twist it, and the soft new putty beside a re-glazed pane is off-limits to it.
The three-word razor gospel: a wet surface floats chips and prevents scratching, a low angle shaves rather than chisels, and a single push direction keeps you from dragging grit back across the glass. Fresh edges only. A single-edge razor is a consumable measured in minutes of hard use — the instant it starts skipping or leaving a comet-tail of un-lifted film, retract it and load a fresh one from the handle; a dull or nicked blade is the direct cause of most razor scratches. Two-finger control. The low body invites a light, controlled grip with the index and middle finger guiding the head — this is a finesse tool, and forcing it defeats the point of choosing it over a fisted holder. Lock, then load. Extend, confirm the blade lock has seated before you lean into drag, and retract-and-lock the moment the tool leaves your hand.
Asked at the counter
BUYER QUESTIONS ANSWERED BEFORE THE CART, NOT AFTER THE RETURN
What blades does it take?
Standard single-edge razor blades; two come with it, and the handle stores spares. Match a fresh edge to the job — razors are a consumable, not a permanent edge.
Why choose this over a Delta™?
Clearance and control. When the glass is under a sash, in a channel, or at a framed edge — or when the target is delicate — the low body reaches and the two-finger grip finesses where a full-hand production holder is too tall and too much tool.
Will it scratch my glass?
Only if you break the rules: dry glass, a high angle, or a dull/nicked blade cause virtually every razor scratch. Wet it, keep the angle low, replace the edge the moment it skips, and test tempered glass in a corner first.
Can I use it on wood or plastic?
No. Razor scrapers are for hard, smooth, non-porous surfaces — glass, mirror, glazed tile, metal, ceramic cooktops. On wood, trim, or plastic a razor cuts in; reach for a putty knife or wall scraper instead.
Does the blade stay out under pressure?
Yes — that is what the blade lock is for. Confirm it has seated before you lean into a sticky peel, and retract-and-lock before the tool goes back in a pocket.