September 2026
Three methods, three different things happening to your part
People call us with the same sentence about once a week. “I was going to sandblast it, but someone said I shouldn’t.” They are usually right to hesitate, and they usually cannot say why. So here is the honest breakdown of what each of the three common methods actually does, where each one is the correct tool, and where each one costs you a part.
Start from the thing nobody says out loud: all three of these remove contamination. That is not the question. The question is what else they remove while they are at it.
Sandblasting removes material. That is the design.
Abrasive blasting works because the media is harder than what it hits. Sand, garnet, glass bead, aluminum oxide, whatever is in the pot, it arrives at the surface and cuts. The contamination comes off because a thin layer of everything comes off.
For a rusted steel plate you are about to prime, that is exactly what you want. You need a profile for the coating to key into, and abrasive gives you one.
For an aluminum intake manifold, a cast timing cover, a machined sealing face or a frame rail that somebody powder coated once already, it is a bad trade. Soft alloys pit. Machined surfaces lose their finish. Threads round off. And the media itself goes everywhere: into the ports, into the blind holes, into the bearing you did not remove because you did not think you needed to. Then you spend longer chasing grit out of the part than you spent cleaning it.
We hear about the aftermath on the automotive side constantly. A frame gets blasted, and now the powder coat that was underneath the undercoating is gone too, so the whole thing needs refinishing that nobody planned for.
Pressure washing moves the problem instead of solving it
A pressure washer is water and force. On a concrete pad or a dump body it is fine. On anything with electrics, bearings, seals or absorbent material, water is the contaminant you just introduced.
Water does not stop at the surface. It follows the path of least resistance, which is usually a wiring harness boot, a bearing seal, a connector, a seam. Then it sits there. A week later somebody has an intermittent fault and nobody connects it to the wash.
The second problem is what happens after. You now have runoff: water carrying grease, carbon and whatever chemical you added to make it work. That has to go somewhere, and in a commercial setting “somewhere” involves rules.
The third problem is time. The part is wet. Wet parts wait. If you are cleaning something during a maintenance window, drying is part of the window whether you planned for it or not.
Dry ice does thermal work, and then it is gone
Dry ice pellets are frozen carbon dioxide at around 109 degrees below zero. When a pellet hits a fouled surface, three things happen almost at once. The cold shocks the contaminant, which contracts faster than the metal underneath it and loses its grip. The pellet flattens rather than cutting, because it is soft. And then it turns straight from solid to gas, expanding hard as it does, which lifts the loosened layer clear.
Notice what is missing from that description. Nothing harder than the part ever touches the part. No water goes anywhere. And the blasting media does not exist afterward, because it left as gas.
What is on the floor when we finish is the grease or carbon that came off your equipment. Nothing else. No sand to vacuum out of a gearbox, no slurry to squeegee, no rinse water heading for a drain.
So when is dry ice the wrong answer?
It is not a universal tool and we would rather tell you that than take the job and disappoint you.
If you need a surface profile for a coating to bond to, abrasive is the right call. Dry ice cleans a surface; it does not roughen one.
Heavy scale and thick rust on structural steel is abrasive work too. Thermal shock releases things that are bonded to a surface. Rust is not bonded to the steel, it is the steel, part way through becoming something else.
And loose mud on a piece of yellow iron is a hose job. Nobody needs a specialist for dirt that is not stuck.
Where dry ice earns its keep is the middle ground, which is also where most real problems live. Something is fouled, and it cannot get wet, cannot get scratched, cannot be taken apart, or has to be back in service the same shift. That describes most of the phone calls we get.
The comparison that actually matters on a quote
Facility people tend to compare the cleaning step and stop there. The step that costs real money is almost never the cleaning.
Take a gearbox or a weld cell. With an abrasive or solvent approach, the sequence is: shut down, pull it, tear it down, clean it, reassemble, reinstall, commission. The cleaning is a small slice of that. With dry ice, a lot of that work goes away because the equipment gets cleaned where it stands, with wiring and sensors still attached.
That is the part worth pricing out. A slower hourly rate on the nozzle can still finish a week earlier than a faster method that starts with a teardown.
How to decide in about thirty seconds
Ask yourself what you are protecting. If the answer is nothing, and the part is steel, and you want a profile, go abrasive. If the answer is “the finish”, “the tolerances”, “the wiring”, “the coating”, or “my schedule”, then abrasive and water are both working against you.
And if you genuinely do not know, describe the part to us. We look at a lot of fouled equipment in South Florida, and we would rather point you at the right method than sell you the wrong one. That is the whole reason we test an inconspicuous corner before we commit on anything unusual.
Read through our core ice blasting services for the process side of it, or the automotive work if this started with a car. The contact page takes photos, which tell us more than a paragraph ever does.
Questions people ask after this conversation
Can dry ice strip paint, or only clean?
It removes coatings, and how well depends on the coating and what is under it. Thin, brittle or failing finishes come off readily. A healthy two-part coating bonded to sound steel is a different job. We test a patch and tell you what we are seeing rather than promising a result on the phone.
Will the cold hurt the part?
On the substrates we work on, no. The contact is brief and the mass of the part carries the heat. What matters more is thickness and material: thin plastics, some seals and certain glass need a lighter setting, which is what the test patch establishes.
Is it quieter than sandblasting?
No. Compressed air through a nozzle is loud whatever is in the stream, and hearing protection is required. It is cleaner, not quieter, and anyone who tells you otherwise has not stood next to one.
Where to go from here
If you are weighing methods on a specific piece of equipment, the fastest path is a couple of photos and a sentence about what is on it. Call Giancarlo at 786-302-6553 or send it through the contact form. We work out of Miami and run roughly a hundred miles out, so the rig comes to the machine rather than the other way around.