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Production (Mechanical)

Large Wreath

Brought to you by:

WE Development

Large Wreath

Content written by:

WE Development

Last Updated:

9 June 2021 at 2:39:22 am

Image by Daniel Mirlea
Job Process

When your product has huge demand, planning for systematic production is important!




Here, we identify the processes you will be going through;




1) Check your drawings again




When you move from prototyping to production, you need to ensure all errors are rectified, and there will be no more changes. What you should check again are;



i) hole alignments for mounting and mating interfaces



ii) allowable tolerances and gaps in areas that are moving and rotating



iii) an acceptable surface finishing



iv) all problematic manufacturing methods are simplified 




2) Production requirement




You need to ensure your manufacturing requirement are specified in your drawings, such as;



i) Tolerances


ii) Welding details


iii) Bending radius


iv) Surface flatness


v) Surface roundness


vi) Gaps when assembling


vii) Maximum or least material conditions (MMC or LMC)




3) Align production expectation




I will make a presentation and discuss with the management, design team and other stakeholders on the production plan and how to control quality during production. Any constructive feedbacks and recommendations will be added to enhance the production plan.




Depending on the production's urgency and certainty, you may split the production into batches if there are still unforeseen issues. This may sometimes happen when a prototype was quickly rushed for production.



You can then later rectify from the first batch before proceeding to later production batches. However, cost will increase since vendors will allocate time to cut and fabricate separately.




4) Request for quotation (RFQ)




Depending on the size of your company, you may either;



i) Send manufacturing requirement, drawings and BOM list to the purchaser to do the RFQ



ii) We search vendors ourselves either online or through our vendor list to RFQ. A minimum of 3 quotes is required.



It would be best if you are prepared to meet these vendors to explain your requirement to negotiate a good price with certainty.




5) Quality checks




The grey area occurs when the fabricated part is fit to use but the quality department failed it due to non-compliance to the engineering drawing.



Strictly speaking, the vendor should redo the work because they did not comply with the drawing. 



However, you should revisit your tolerances and decide whether to approve the already fabricated parts to prevent the vendor from suffering losses. 




6) Continuous improvement




If the production is ongoing, you will expect further changes to the design to enhance the manufacturing process and bring the cost down. Your drawings must have revision number, and proper documentations are in place for traceability in the future.

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