AJ Solutions Machining

Fremont shop specializing in precision CNC machining of plastics, with CNC milling, CNC turning and plastic fabrication.

Capabilities

• CNC milling
• CNC turning
• Plastic fabrication
• Gear hobbing
• Broaching
• Spline cutting
• Prototype machining

Materials

Acrylic, Polycarbonate (Lexan), Polypropylene, Polyethylene, ABS, PVC.

Request a quote

To request a quote from this shop, use the Request a Quote form. Tell us the part, material, quantity and deadline, and we will pass your request to the shop.

CNC Machining of Plastics in Fremont with AJ Solutions Machining

Machining plastic is not the same as machining metal. Plastic moves with heat, can melt on the cutter and can spring back after clamping. That is why buyers in Fremont often look for a shop that works with plastics as a focus. AJ Solutions Machining is a Fremont shop listed here as specializing in precision CNC machining of plastics, with CNC milling, CNC turning, plastic fabrication, gear hobbing, broaching, spline cutting and prototype machining. This page covers how plastics behave and how to describe a plastic part in a request.

Plastics named on the listing

The listing names acrylic, polycarbonate (Lexan), polypropylene, polyethylene, ABS and PVC. Each behaves differently.

• Acrylic is clear and stiff but can crack at sharp corners
• Polycarbonate is tough and impact resistant
• Polypropylene is light and resists many chemicals
• Polyethylene is slippery and resists moisture
• ABS is a common, easy to machine engineering plastic
• PVC is used where chemical resistance and cost matter

Why plastic needs different handling

Plastics expand more with heat than metals do, so a part cut warm can change size as it cools. Soft plastics can deflect under the cutter, and thin walls can vibrate. Sharp tools and light cuts help, and holding fixtures need to grip without squeezing the part out of shape. When your part has tight tolerances, tell the shop, because plastic tolerances are often looser than metal ones.

Milling and turning plastic parts

Milling makes plates, covers, manifolds and fixtures with pockets and holes. Turning makes round parts such as bushings, rollers, spacers and caps. Many plastic parts start as rod, sheet or plate stock and are cut to shape.

Gear hobbing, broaching and spline cutting

The listing includes gear hobbing, broaching and spline cutting. Hobbing cuts gear teeth in a continuous process. Broaching pulls a toothed tool through a part to create a keyway or shaped hole. Spline cutting makes the grooves that let two parts turn together. These services are less common in plastic work, so they can be useful for custom mechanisms.

Prototype machining

Plastic prototypes are common for fit checks, test fixtures and low volume parts. Because setup costs are mostly programming and fixturing, ordering a few parts at once can lower the price per piece.

What to include in your RFQ

• Drawing or model
• Exact plastic type and grade, and color if it matters
• Quantity and expected reorders
• Critical dimensions and tolerance
• Surface finish, such as polished or as machined
• Operating conditions like temperature, chemicals or load
• Delivery date

Buying locally

A Fremont shop makes it easy to bring a sample or discuss clear parts where surface appearance matters.

Finish and appearance

Plastic parts are often judged by look as well as dimension. Clear acrylic shows every tool mark, and some applications need a polished edge. Say whether the part is cosmetic or hidden, because that changes how much finishing is needed. Mention if sharp edges must be broken, if parts must be kept free of oils, and how they should be packed so they do not scratch in transit.

Chemicals and temperature

Tell the shop what the part will meet in use, whether that is heat, cleaning agents, fuel or moisture. The right plastic for a clean, dry bench part may fail in a chemical bath.

Sending a sample or a drawing

If you already have a plastic part that needs to be copied, send a clear description of it with the request. For new designs, a drawing with the plastic type named is best. Plastics vary by supplier and grade, so write the grade you want, and note whether parts must be a specific color or free of fillers. A shop can only quote what it can see, so the more detail you share, the closer the first price will be to the final one.

Send your plastic part details through Machining Marketplace and we will pass them to the shop. Request a Quote to get started.

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