Switching fabricators feels simple on paper. Lower unit price, transfer the work, capture the savings. What the spreadsheet does not show is everything that happens between the decision and the first acceptable part coming off the new supplier’s line.
Re-qualification, quality control, and tooling
Every new supplier needs to be qualified before they can produce parts for your program. In a realistic scenario involving back-and-forth on tolerances or material requirements, that takes months. During that window your program is running on safety stock or at risk of a production gap.
Quality control validation with a new supplier is not a formality. It confirms they can produce your part to specification using their equipment and their process. There is no guarantee it goes smoothly the first time. Each cycle adds time and cost to a transition that was already being measured against a projected saving.
Tooling transfer adds another layer. Tooling may need to be refurbished or modified to work within the new supplier’s equipment. In some cases it needs to be rebuilt entirely. These costs rarely appear in the unit price comparison that triggered the switch.
The institutional knowledge problem
This is the hardest cost to quantify. A fabricator who has run your program for several years knows which dimensions tend to drift, which material lots have caused problems, and how your parts behave downstream. That knowledge disappears when the program moves. The new supplier starts from zero and the learning curve you already paid for gets paid for again.
What the real calculation looks like
A responsible evaluation should account for re-qualification time, quality control cycles, tooling costs, and the internal time your team spends managing the transition. When these are included, the projected saving often looks significantly smaller. The decision may still be the right one, but it should be made with accurate numbers.
When switching is the right call
There are legitimate reasons to make a change: persistent quality issues, missed lead times, or a program that has outgrown the supplier’s capacity. When those conditions exist, a transition is worth the cost. The point is that the cost should be understood before the decision is made, not after.
What JGW brings to this conversation
JGW Machine has been manufacturing in Princeton, Ontario since 1953. Programs that come to JGW tend to stay at JGW because we invest in understanding your parts, your tolerances, and your production requirements in a way that is genuinely difficult to replace on unit price alone.
Contact JGW to discuss your current program or request a facility visit.
Built for the long term. Contact JGW Machine today. sales@jgwmachine.com | 519.458.4882
