Start with a controlled drawing package
Give each part a part number and revision. Include the drawing date and identify the current revision in your enquiry. Remove superseded files from the package or label them clearly as reference only. For assemblies, include the assembly drawing and a bill of materials so the supplier can distinguish fabricated parts from purchased hardware.
- DXF or DWG for relevant profiles; STEP where a 3D model helps explain the assembly.
- A PDF drawing showing finished dimensions and the revision to quote.
- Separate part and assembly quantities, including left- and right-hand variants.
- State which drawing or model takes precedence if dimensions disagree.
Define material and finished condition
Specify the material grade and thickness rather than only saying “steel” or “stainless.” Identify whether thickness refers to the base sheet or a finished coated measurement. If alternatives are acceptable, ask for them as separate options. Keep the approved material choice visible on the final order.
- Material grade, nominal thickness and any required certificates.
- Finish, colour reference, texture and appearance requirements.
- Surfaces to mask, threaded features to protect and electrical bonding areas.
- Whether welding, hardware, assembly and packing belong in the quoted scope.
Identify what is critical to fit
Mark the dimensions and interfaces that affect installation: mating holes, door clearances, connector positions, mounting faces and overall envelope. Avoid assigning a tight tolerance to every dimension by default. Instead, ask the fabricator to review whether the specified tolerances are achievable after bending, welding and finishing. A cutting tolerance alone does not describe the accuracy of a complete enclosure.
- Critical dimensions and an agreed inspection method.
- Mating component drawings or samples where relevant.
- Bend direction, visible faces and acceptable seam locations.
- Any ingress-protection, loading or other validation requirement, including who performs the test.
Make commercial comparisons fair
Ask suppliers to quote the same revision, quantity and scope. Separate prototype cost, tooling or setup charges, unit price, finishing, transport and taxes where applicable. Confirm the delivery location and required date, while allowing the supplier to state a realistic manufacturing lead time. A lower piece price may cover less assembly or inspection than another quotation.
- Prototype quantity, first order quantity and likely repeat batches.
- Required delivery date and shipment destination.
- Inspection records, packing and labelling requirements.
- Clarifications and exclusions recorded with the quotation.
Send your enquiry to Shabari
Shabari Metal Products accepts DXF, DWG, STEP and PDF enquiries for custom metal parts and enclosures, from prototypes to repeat batches. Include material, quantity, finish and the current drawing revision. Our team reviews the requested scope before confirming price and delivery. Do not send confidential drawings until you have agreed any confidentiality requirements.