Comparison
99% Isopropyl Alcohol vs Flush Cutters: Which Should You Buy? (2026)
| At a glance | 99% Isopropyl Alcohol | Flush Cutters |
|---|---|---|
| Rating | ★★★★⯨ 4.7/5 | ★★★★⯨ 4.6/5 |
| Price | $12-20 | $8-15 |
| Best for | Every FDM and resin printer owner. | Every printer owner, every print. |
| Guarantee | Amazon return policy applies | Amazon return policy applies |
| Check Today's Price → | Check Today's Price → |
Let's be straight about this one: these two products aren't competitors. One is a bottle of solvent, the other is a hand tool, and a working print bench eventually has both on it. So the real question isn't which is better — it's which one your printer actually needs, and which to grab first if you're only spending money once this month.
Here's the fast answer. If you run a resin printer, the alcohol isn't optional; it's the standard wash for every print that comes off the plate. If you run FDM only, the flush cutters are the tool you'll physically touch every single print, while the IPA gets used now and then for bed cleaning. That's the whole decision. The rest is detail.
The picks
99% Isopropyl Alcohol
Cleans beds for adhesion and washes resin prints — a shop staple.
$12-20 · Amazon return policy applies
The 99% purity is the point. Lower concentrations from the drugstore carry more water, which evaporates slower and works against both jobs this bottle does: degreasing a build plate (skin oil from one careless grab is enough to make a first layer peel) and washing uncured resin off finished prints. At $12–20 it's the cheapest fix for the single most common FDM complaint — prints that won't stick — and its 4.7 rating reflects how rarely it disappoints. The cautions are real, though. It's flammable, you want ventilation when using it in quantity, and shipping rules on high-purity alcohol vary by region, so check before you order.
Flush Cutters
Sharp side cutters for clean removal of supports and filament.
$8-15 · Amazon return policy applies
Flush cutters are ground flat on one face, which is what separates them from the generic wire snips in your junk drawer — they cut flush against a surface, so support nubs and brim edges come off clean instead of leaving a raised stub to sand. Supports, brims, filament tips before every load: this is the most-handled tool on an FDM bench. At $8–15 there's no reason to overthink the purchase. Two honest caveats from the cons column: cheap pairs dull fast if you abuse them, and they're for plastic and soft wire only — chew through a hardened screw once and you've bought your next pair.
How to choose in ten seconds
Resin printer: alcohol first. You can't finish a resin print properly without a wash step, and IPA is the default.
FDM printer: cutters first. You'll use them today, tomorrow, and every print after. Then get the alcohol the first time a print refuses to stick — which comes sooner than most people expect.
Both kinds of printer: stop comparing and buy both. Combined they cost less than a couple spools of filament.
Who should skip which
Skip the 99% IPA if you already keep high-purity alcohol around from electronics or resin work — a second bottle solves nothing. And if shipping restrictions inflate the online price where you live, a hardware store run often beats ordering.
Skip the flush cutters if you already own a decent flush-ground pair from electronics work. It's the same tool. A second pair is only worth it because these things vanish into drawers — "easy to misplace" is listed as a con for a reason.
Bottom line
This matchup is a category error, and pretending otherwise would be dishonest. The alcohol solves adhesion and resin washing; the cutters solve post-processing. Match the first purchase to your printer — resin owners need the bottle, FDM owners need the cutters — and plan on owning both before long. Neither will be the most exciting thing on your bench. Both will be among the most used.