If you've called around about stripping a rusty trailer frame, a set of patio chairs, or a part you want powder coated, you've probably heard two terms used almost interchangeably: sandblasting and media blasting. They're related, but they aren't exactly the same thing, and the difference matters for how your part looks and how well the new finish holds. This post explains both in plain language, covers how blasting fits into sandblasting in Queensbury, NY at ADK Blast N Coat, and lists the questions worth asking any shop before you drop off a part.
The Short Answer
Media blasting is the umbrella term. It means propelling an abrasive material (the "media") at a surface to clean, strip, or roughen it. Sandblasting is the older, more familiar name, and it originally meant using actual sand as the abrasive. Today most people say "sandblasting" for almost any abrasive blasting, whatever media is in the machine.
So when you ask for sandblasting, the real question is usually: which media, and how aggressive, for this part?
What Sandblasting Originally Meant
Traditional sandblasting used silica sand blown through a nozzle with compressed air. It cut quickly and was cheap and easy to find. The downside is health: blasting silica sand creates fine crystalline silica dust, which can cause serious lung disease. Because of that, OSHA regulates respirable crystalline silica exposure, and many shops use other abrasives instead, even though customers still call the process "sandblasting."
If you want to know what a shop actually puts in its blaster, ask. It's a normal question.
What Media Blasting Covers
"Media" can mean a lot of different materials. Each one cuts differently, depending on how hard it is, what shape the particles are, and how much it weighs. Here are some common types used across the industry:
| Media type | General character | Typically used for |
|---|---|---|
| Aluminum oxide | Hard, sharp, angular | Aggressive stripping and creating a profile for coatings |
| Garnet | Hard natural mineral, angular | Rust and paint removal on steel |
| Steel grit / steel shot | Heavy; grit is angular, shot is round | Heavy rust and scale on steel |
| Glass bead | Round, smooth | Cleaning and brightening with a smoother, satin-like surface |
| Crushed glass | Angular | General stripping |
| Plastic, walnut shell, corn cob | Soft | Gentler cleaning on delicate surfaces |
| Baking soda | Very soft | Light cleaning; leaves a residue that has to be removed before coating |
This is a general overview, not a list of what any one shop runs. Media choice depends on the equipment, the material, and the result you're after.
Why the Media Choice Matters for Powder Coating
When a part is being blasted before powder coating, the goal isn't just "clean." It's clean and properly profiled. A few general principles:
- Angular media creates a profile. Sharp-edged abrasives leave a fine, textured surface that gives the coating something to grip. That's why blasting is described as "creating a surface profile" or "mechanically etching" a part before coating.
- Round media cleans and smooths. Glass bead and steel shot tend to leave a smoother, peened surface. That can look great on bare metal, but it may not give a coating as much tooth as an angular abrasive.
- Soft media is gentle but limited. Plastic, walnut shell, and soda are useful when you can't afford to remove base material, but they're slower on heavy rust and mill scale.
- Thin metal needs care. Aggressive blasting can stress and distort thin sheet metal panels, so technique, pressure, and media all matter.
- Bare steel rusts fast. Freshly blasted steel can start to flash rust if it sits in humid air. The time between blasting and coating matters.
- Mixing media can cause problems. Steel abrasive particles left embedded in aluminum, for example, can lead to corrosion later. Shops usually keep media matched to the material.
Sandblasting in Queensbury, NY at ADK Blast N Coat
ADK Blast N Coat is an owner-operated sandblasting and powder coating shop at 22 Park Road in Queensbury. We do the blasting in-house. You don't have to strip a part yourself, and if we're powder coating it, it doesn't get sent to another facility to be stripped first. Here's what we use our sandblasting for:
- Refinishing parts
- Creating surface profiles
- Removing existing finishes
- Removing corrosion
- Mechanically etching parts before coating
That covers everything from patio furniture that needs refurbishing to small and large parts that need cleaning. On wheels, for example, we chemically strip them in our Greensolv tank, rinse and oven-dry them, and then sandblast before any powder goes on.
Blasting or Pretreatment Wash: Two Ways We Prep
Sandblasting is one of two prep options we use. Any part with an existing finish or coating, or rust and corrosion, gets blasted. Newly fabricated steel and metal that has never been coated goes through our 5-stage pretreatment wash instead:
- Clean off residual oils, soils, and any rust
- Chemically etch the surface to create a profile for the powder to adhere to
- Apply a conversion coating for added protection
- Rinse and seal the surface to remove all the chemicals used
- Final inspection before powder coating
Either way, the goal is a clean surface free of contaminants, which helps prevent problems like fish eye in the finished coat. We also mask areas that need to stay bare, based on your finish requirements. Because prep and coating happen under one roof, a part doesn't travel between shops before it's coated.
Questions to Ask Before You Drop Off a Part
Whether you bring your part to us or to another shop, these questions will get you a clearer answer and fewer surprises:
- What media will you use on my part, and why? The answer should depend on the material (steel, aluminum, cast) and the part's condition.
- Is this part thin enough to warp? Ask this for sheet metal panels, hoods, and fenders.
- How will threads, bearing surfaces, and machined faces be protected? Find out what gets masked and what you should remove ahead of time.
- Do I need to disassemble it first? Rubber, plastic, bearings, seals, and glass usually need to come off before blasting.
- Will blasting reach inside tubing or closed sections? Blasting is line-of-sight, so interior surfaces can be hard to reach.
- Is it being coated after blasting, and how soon? Bare steel left sitting can flash rust.
- What happens if you find damage under the old finish? Blasting can reveal pitting, cracks, or thin spots that paint was hiding.
What to Send for a Quote
Quotes are faster and more accurate when you include:
- Photos of the part, which are the most helpful thing you can send
- Material, if you know it, and current condition (painted, rusted, previously powder coated, plated)
- Dimensions and quantity
- What you want done: blasting only, or blasting plus powder coating
- Color and finish, if it's going to be coated
- Any areas that must stay bare
Shop hours may vary, so please call or text before heading over to drop off or pick up.
Frequently Asked Questions
Is sandblasting the same as media blasting?
Mostly, in everyday use. "Media blasting" is the broader term for blasting with any abrasive. "Sandblasting" originally meant using sand, but people now use it for most abrasive blasting.
Do I need to strip my part before bringing it in?
No. We do sandblasting in-house, so you don't need to strip it yourself, and parts we're powder coating don't get sent elsewhere to be stripped.
Can you blast a part without powder coating it?
Ask us about your specific part. Send photos and tell us what you want done, and we'll let you know.
Is blasting safe for aluminum?
Aluminum can be blasted, but it's softer than steel, so media and technique matter. If it's newly fabricated aluminum with no existing finish, it can go through our 5-stage pretreatment wash instead. Either way, we'll recommend the right prep for your part.
Get Your Part Blasted and Coated in Queensbury
If you're in Queensbury, Glens Falls, Lake George, Saratoga, or anywhere nearby and you have a part that needs to be stripped, cleaned, or prepped for a new finish, get in touch with ADK Blast N Coat. Send a few photos and the details, and we'll go over the right approach with you.
- Call or text: (518) 350-9373
- Email: Info@adkblastncoat.com
- Visit: 22 Park Road, Unit B-2, Queensbury, NY 12804
- See our work: Past work gallery
Not local? No problem. We're based in Queensbury, NY, but we work with companies all over New York State, and our work ends up all across the United States. We'll take in jobs from anywhere.
