The gap between fabrication and a finished part is finishing. Burrs, sharp edges, weld beads, mill scale, and surface contamination don't remove themselves. Lasertech's in-house finishing team handles every step — from basic edge-breaking on functional parts to multi-pass weld blending for cosmetically demanding assemblies.
A laser-cut edge is sharp. A press-formed flange has raised material. A welded joint leaves a bead, spatter, and heat discoloration. A part straight off a forming machine is not a finished part — it's a part that still needs finishing.
Skipping or rushing finishing creates problems downstream: coating adhesion failure on unblended welds, fit-up interference from un-deburred edges, safety hazards for handlers, and cosmetically rejected parts that go back for rework at the worst possible time.
Powder coating bonds to the metal substrate — not to scale, oils, spatter, or raised beads. Proper finishing and surface preparation are the single largest driver of long-term coating adhesion and durability.
Unbroken laser-cut edges are razor-sharp. Parts that pass through multiple hands before installation need to be safe at every step — from Lasertech's shipping dock through your receiving, storage, and assembly operations.
Burrs on hole edges prevent hardware from seating flush. Un-blended weld beads prevent mating surfaces from closing properly. Finishing ensures parts function as designed, not just look right in a drawing.
For visible parts — enclosure faces, panels, architectural components — consistent finishing across a production run is as important as consistent dimensions. Uneven weld blending and missed deburring show up clearly after powder coating.
In-house finishing means no scheduling a separate shop for surface prep, no transportation between finishing and coating, and no quality gap between the fabricator's tolerance and the finisher's workmanship. Everything happens under one roof.
Lasertech's finishing capabilities cover the full range of surface operations performed between fabrication and coating — from basic deburring on functional structural parts to multi-pass cosmetic blending on customer-facing assemblies.
Removal of sharp burrs left by laser cutting, punching, drilling, and machining operations. Deburring is performed manually with files, rotary tools, and deburring wheels — or with bench-top deburring equipment for consistent results across production quantities. Holes, slots, cutouts, and external edges are all addressed to ensure parts are safe to handle and correctly dimensioned at all apertures.
All Gauges · Steel · Stainless · AluminumControlled removal of the sharp 90° arris on laser-cut and sheared edges, replacing it with a consistent small chamfer or radius. Edge breaking eliminates the primary handling injury hazard on fabricated sheet metal and is required on all parts processed through Lasertech's assembly and powder coating operations. Specified as a standard operation on all outgoing fabricated parts unless otherwise noted.
Standard on All PartsReduction of raised MIG and TIG weld beads using angle grinders and flap discs to bring the weld surface flush with or close to the surrounding parent material. Weld bead grinding is required on any weld that falls within a cosmetically visible area, on surfaces that will be powder coated with smooth or gloss finishes, and on mating surfaces where the bead would prevent proper fit-up with an adjacent component.
MIG · TIG · Spot Weld SpatterA multi-pass process that continues beyond grinding to fully feather the grind mark into the surrounding parent metal surface. Progressively finer abrasive grits are worked across the weld zone until the repair is visually indistinguishable from the surrounding material. Blending is specified for highest cosmetic-grade work — enclosure faces, architectural panels, food service equipment, and any part where the weld must be invisible after powder coating.
Cosmetic Grade · Multi-Pass AbrasiveControlled material removal from flat surfaces to achieve dimensional accuracy, flatness, or a consistent surface profile. Applied to mating surfaces that require a specific flatness tolerance, to high spots from forming operations, and to areas where accumulated weld distortion has created surface variation that must be corrected before coating or assembly. Results in a consistent, uniform, scratch-pattern surface across the treated area.
Flatness · Dimensional · Pre-Coat PrepHigh-velocity propulsion of abrasive media — glass bead, steel shot, or aluminum oxide — against part surfaces to remove mill scale, rust, weld discoloration, and surface contamination. Blasting creates a consistent anchor profile across the entire surface that dramatically improves powder coating adhesion over chemically pretreated surfaces alone. Essential for parts with heavy scale, uneven oxidation, or large surface areas requiring uniform preparation before coating.
Glass Bead · Steel Shot · Aluminum OxideNot every part needs the same finishing investment. Lasertech works to three general finishing grades — matched to the part's application, visibility, and downstream process requirements. Specify your required grade on the drawing or quote request.
The highest finishing level. Required for customer-visible surfaces, architectural panels, food service equipment, and any part where the surface will be clearly visible in the final installed product. All welds blended flush and feathered to parent material. No visible grind marks. Edge-broken and blasted for uniform surface texture before coating.
The standard finishing level for most fabricated sheet metal parts. Welds are ground flush but not fully blended — grind marks may be visible. Spatter is removed. All edges are deburred and broken. Surfaces are cleaned and prepared for powder coating. The result is a part that is safe, fully functional, properly coated, and presentable — but not cosmetically perfect.
Minimum finishing for structural or non-visible parts — internal frames, hidden brackets, mounting structures, and components that will never be visible or accessible in the final product. Sharp edge hazards are removed. Weld spatter is cleaned to prevent coating delamination. No cosmetic attention is applied to weld seams or grind marks. Efficient and appropriate for structural applications.
Weld blending is where fabrication quality and finishing quality combine to determine the final cosmetic outcome of a part. A smooth, uniform powder coat finish over a welded joint starts here — not at the spray booth.
Powder coat — especially smooth and gloss finishes — does not hide surface variation. It reveals it. A raised weld bead visible before coating will be equally visible, or more so, after coating. Proper blending is the only reliable path to a cosmetically flat, uniform surface after coating.
Heavy-grit disc removes the raised weld bead, reducing it to approximately flush with the surrounding base metal. This step generates a visible grind pattern across the weld zone — the work is not yet blended.
Weld spatter and tack weld remnants are removed using a flap disc or carbide burr. Any porosity or underfill in the weld that would print through coating is filled or addressed before proceeding.
Medium-grit abrasive belt or flap disc is run across the ground zone in a consistent direction, feathering the edges of the grind into the surrounding parent metal and reducing the visible boundary between the repair and the base surface.
Fine-grit abrasive in a consistent pattern completes the feathering — the weld zone and surrounding surface now have a uniform scratch pattern with no visible boundary. The area is ready for surface prep and coating.
Blended surface is cleaned, degreased, chemically pretreated or blasted, and transferred directly to powder coating — no delay that would allow surface oxidation to form on the freshly blended metal.
Each finishing operation creates a distinct surface profile — visible to the eye before coating. The profile selected determines both the aesthetic outcome and the coating adhesion characteristics of the finished part.
Laser dross, mill scale, weld spatter, and raised bead intact. Coating adhesion unpredictable. Sharp edges present. Not acceptable for delivery.
Weld bead reduced flush. Directional grind pattern visible across weld zone. Spatter removed. Safe edges. Standard functional finish before coating.
Multi-pass abrasive work. No visible weld zone boundary. Uniform scratch pattern across full surface. Maximum cosmetic quality before coating.
Uniform matte profile across entire surface. Maximum powder coat adhesion. Scale, rust, and discoloration fully removed. No directional scratch pattern.
Consistent parallel scratch pattern applied in one direction. Decorative finish for stainless steel or aluminum visible surfaces requiring a machined-look aesthetic.
Finishing is not an afterthought — it's a deliberate stage in the fabrication sequence. At Lasertech, it sits between fabrication/welding and powder coating, ensuring every part arrives at the spray booth in the correct condition for a durable, consistent finish.
Sheet cut to net shape. Edges have laser dross, fine burr.
Press brake forming, punching, hardware features added.
MIG/TIG welding joins components. Bead, spatter, discolor present.
Deburr · grind · blend · blast. Part is clean, safe, coat-ready.
Electrostatic application and cure. Finish bonds to prepped surface.
Hardware inserted, kitted, packaged, delivered ready to install.
Lasertech's finishing operations are performed on the same materials we fabricate — steel, stainless steel, and aluminum in all standard sheet gauges. Each material has different finishing characteristics that affect abrasive selection, grit sequence, and surface profile.
Most common substrate. Grinds and blends readily. Mill scale requires blasting or aggressive chemical pretreatment before coating for reliable adhesion.
Galvanized zinc coating grinds away at weld zones — these areas require zinc-rich primer or blasting and recoating to restore corrosion protection before powder coating.
Harder to grind than mild steel — requires specific abrasive grades. Directional brush finishing available for decorative stainless applications. Care taken to avoid iron contamination from carbon steel tools.
Soft and prone to loading abrasive discs — requires appropriate open-coat abrasives and light hand pressure. Weld discoloration from heat is addressed with blasting before anodizing or coating.
Finishing requirements should be specified on the drawing or in the quote notes — not left to interpretation. The more precisely finishing is specified, the more consistently it will be delivered across a production run.
Not sure what to specify? Call us at 770-461-9941 — our team reviews your drawings and recommends the appropriate finishing grade based on your part's application, coating specification, and budget.
Finishing quality determines the final appearance and durability of fabricated products across every industry Lasertech serves. The investment in proper finishing is visible — and so is the lack of it.
Generator enclosure panels with weld-blended seams and abrasive-blasted surfaces for maximum coating durability in outdoor, weathering environments.
Stainless steel components requiring smooth, cleanable, crevice-free surfaces — weld blending eliminates surface variation that traps contamination and resists sanitation.
Visible panels, railings, and metalwork requiring cosmetic Grade A finish — no visible welds, consistent surface texture, and uniform appearance across the entire installation.
OEM cabinet panels and enclosures finished to Grade B — welds ground flush, edges broken, surfaces blasted or chemically treated for consistent, durable powder coat adhesion.
Production finishing for OEM supply — consistent grade specification applied across entire runs with inline inspection to catch finishing deficiencies before powder coating.
Aluminum and steel fabricated components requiring clean, burr-free edges and consistent surface prep — structural Grade C for hidden parts, Grade A or B for bodywork and interior panels.
Air handler components, plenums, and duct sections deburred and edge-broken for safe handling and consistent surface prep before coating for corrosion resistance.
Target frames and structural range components — Grade C structural finish for non-visible components, edge-broken and blasted for durable protective coating in high-wear environments.
Common questions about metal finishing services at Lasertech Metal Works.
Finishing refers to the mechanical surface operations performed on fabricated parts between the forming/welding operations and the coating or delivery stage. This includes deburring (removing sharp burrs from cut edges), edge breaking (softening sharp corners), weld grinding and blending (reducing weld beads flush with the parent surface), surface grinding, abrasive blasting, and brushing. Finishing makes parts safe to handle, cosmetically consistent, and properly prepared for powder coating or other coatings.
Powder coating bonds to the metal substrate, not to scale, oils, weld spatter, or raised beads. Surface defects that exist before coating will be visible — or become visible — after coating. Smooth and gloss powder coat finishes in particular reveal every surface variation. Proper finishing and surface preparation are the largest single driver of long-term coating adhesion, durability, and cosmetic quality. Parts that aren't properly finished before coating will fail — either cosmetically at delivery or physically in service.
Weld grinding removes the raised bead, reducing it approximately flush with the surrounding parent material in a single pass with a heavy-grit disc. The result has a visible grind pattern across the weld zone — it's ground, not invisible. Weld blending continues from grinding through multiple progressively finer abrasive passes that feather the grind mark into the surrounding surface until the weld zone is visually indistinguishable from the surrounding metal. Blending is required for cosmetic Grade A work where the weld must be invisible after powder coating.
Media selection depends on the application. Glass bead produces a smooth, bright, uniform profile — ideal for stainless steel, aluminum, and parts requiring a clean appearance before coating. Steel shot or grit creates a more aggressive anchor profile for maximum coating adhesion on steel parts with heavy scale or rust. Aluminum oxide is used where a sharp anchor profile is required without introducing iron contamination on aluminum or stainless parts. Lasertech selects appropriate media based on material, condition, and downstream coating requirements.
Call out the finishing grade (A, B, or C), weld treatment (grind only or grind + blend), edge treatment (break all or specific edges), and surface prep method (blast, chemical pretreatment, or degrease) on the drawing general notes or in the quote request. Identify cosmetically visible surfaces with a note, leader, or shading on the drawing so finishing effort is directed correctly. If you're unsure what to specify, call us at 770-461-9941 — we review drawings and recommend the appropriate finishing spec for the part's application.
Call 770-461-9941 or use our online contact form. Provide drawings, photos, material type, quantity, and your finishing specification or description of the cosmetic requirement. Finishing can be quoted as part of a complete fabrication-to-coating workflow or as a standalone service on customer-supplied parts.