Process guides · Q&A
Engineering Q&A
Ask about tolerance, finish, lead time, or inspection. Dongguan engineers answer from your drawing. Upload a STEP when you want a quote.
Process path
Laser cutting, die casting, and metal 3D printing — what this shop runs, and when the path is CNC.
Can a laser-cut blank be bent on the same order?
Yes. Flat laser blanking for aluminum, stainless, and cold-rolled steel can continue into bending, hardware inserts, powder coat, and light assembly on one project calendar at Zoryra Precision in Dongguan, China.
For a housing, do you die cast or machine it?
Die casting is not a standard line at Zoryra Precision. Housings and brackets are CNC machined in Dongguan, China. Die-cast tooling is reviewed only as special sourcing.
Do you SLM or DMLS print metal parts, or CNC them?
Metal powder-bed printing (SLM / DMLS) is not a standard line. Functional metal prototypes and small batches are CNC milled or turned in Dongguan, China. This is not resin SLA.
Drawings and DFM
When five-axis is actually needed, how much relief a blind thread needs, and when a wire insert is called out.
Last answer
Do CNC threads need a wire thread insert?Which parts actually need five-axis?
Evaluate five-axis per part when several faces are related, there is a contoured surface, an angled hole, or an undercut, and more than two or three setups would stack the datums away. Flat cavities, straight holes, and ordinary steps usually take less machine time on three-axis. Most flanges and brackets are milled. Bearing bores and shafts can add turning. Not every part defaults to five-axis.
How much relief does a blind tapped hole need?
Leave at least 1.5× pitch of relief at the bottom of a blind hole. Write three things on the drawing: thread spec, tap-drill diameter, and effective thread depth. For small threads and deep holes, do not write only “tap to the bottom.”
Do CNC threads need a wire thread insert?
If you want one, write it clearly: part number, depth, through or blind, and which face it sits on. If it is not written, the reference price is marked to be confirmed. We do not install one default insert. The quote is by feature.
Materials and surface
Anodize masking on mating threads, 6061 or 7075, how thin an aluminum wall can be, and heat treat that is not in the quote.
Will anodizing plug mating threads?
Yes. Do not anodize mating threads, dowel holes, mating faces, or ground points by default. When the film thickness changes, threads seize and fits get tight. Call out masking on the drawing, or state that coating the threads is allowed. If it is not written, we mask.
How do you choose 6061 or 7075 aluminum?
For housings, brackets, rail plates, and structures that will be welded or that need cost kept down, use 6061-T6. This is the usual default grade in the quote. It is a magnesium-silicon alloy, welds relatively well, can be milled, and can be mixed with sheet metal. Clear, black, and hard anodize can all be selected. For high load, fixture bodies, and fatigue duty, use 7075-T6. 7075 is stronger, can be milled, hard anodize is by selection, and weldability is ordinary. Higher strength is not a reason to make the wall thinner. Thin walls and threads still need an engineer to confirm.
How thin can an aluminum wall be?
A common aluminum wall is not below 1.0 mm. Thinner can be asked about. It needs DFM first. It is not a capability that is already confirmed. After lightening, a frame is best not below 1.2 mm. When wall thickness is about below 1.0–1.2 mm and the internal corner is sharp, the usual results are chatter, distortion after anodize, and cracking at lightening-pocket corners.
If the drawing does not call out heat treat, the quote does not include quench
If hardness range, quench, temper, or stress relief is not written, the reference price is estimated for the part as machined and does not include those operations. If you want them, write the material, the hardness range, and whether stress relief is required, on the drawing or in the notes. Quench and temper are separate line items. Outside heat treat is counted in production days. Shipping days are still listed separately.
Tolerances and inspection
What happens when a dimension has no tolerance, and whether to select a dimensional report, FAI, or CMM.
What happens when the drawing has no tolerance?
Dimensions that are not called out individually follow that drawing’s own general tolerance note. A smaller grade number is tighter. Ordinary milling and turning follow the untoleranced note on the drawing. Precision holes, mating faces, and requirements within 0.01 mm must be called out on the drawing, and an engineer confirms whether they can be met. The quote page says critical tolerances follow the drawing.
Which box do you tick: dimensional report, FAI, or CMM?
Select the four separately. A dimensional report checks the dimension list both sides confirmed. It is not a default full-dimension inspection. A material certificate is supplied by heat or grade, and it exists only if it was selected at quote. FAI is for a new part, a first batch, a gauge plate, or a multi-datum flange. It lines up the design, the critical dimensions, and the cosmetic agreement first. CMM is for when the list names position, coaxiality, or flatness. 1 piece can also select FAI.
Prototype to small batch
How a paid 1-piece prototype is quoted again before a small batch.
Lead time and trade terms
How many of the quoted days are shipping, and what the AI reference price includes.
Last answer
What does the AI reference price include?How many of the 10 days are shipping?
The about 10 days on the quote page is about 5 days of production in Dongguan plus about 5 days of destination shipping, shown as an illustration. About 6 days is about 3 days of production plus about 3 days of shipping. About 17 days is about 8 days of production plus about 9 days of shipping. This is a reference total. It is not pure machining days on the shop floor, and it is not a door-to-door guarantee.
What does the AI reference price include?
The reference price splits these items: material, machining (also written as machine time), setup (also written as a start), and the finish you select. The lead-time tier has its own machining surcharge: economy 0%, standard +12%, rush +28%. On the quote page, production days include process tier, finish, and inspection. Shipping days are listed separately. Freight adjusts with the tier. This is a reference breakdown. It is not a contract, not an automatic charge, and not a locked price for a later quantity.
Cases
No case page is published in this room.
No matching Q&A
Try another term, or clear the search to see all.