Broken Part. No Drawing.
A machine shop can manufacture a replacement directly from a broken component without any drawing: the part is measured, its material identified, and a production-ready drawing produced from the part itself.
- Situation /
- Down now
- Steps /
- 5 to get moving
- Bring /
- 4 things
- Call /
- 337-837-2314
A machine shop can manufacture a replacement directly from a broken component without any drawing: the part is measured, its material identified, and a production-ready drawing produced from the part itself.
Something failed, the equipment is down, and there is no documentation. The manufacturer may be gone, the model long discontinued, or the drawing lost decades ago. This is one of the most common situations a job shop deals with, and it is entirely routine.
What to do
- 01
Keep every piece, including the broken ones
Do not throw away fragments. A part broken in two still carries almost all of its dimensions, and the fracture surface tells a machinist how and why it failed — which is information the original drawing would not have given.
- 02
Photograph it next to something for scale
Photographs from several angles with a tape or ruler in frame are enough to start a conversation and get a rough idea of cost before anything is shipped.
- 03
Send the part in
The physical part is worth more than any description. It is measured, features are identified, and material is determined by testing or by informed judgement from the application.
- 04
Separate design intent from wear
This is the part that requires judgement rather than measurement. A worn shaft is undersized where it ran and correct everywhere else; copying it faithfully reproduces the wear and the replacement fails the same way. The original dimensions are worked back from unworn areas, mating components and standard fits.
- 05
Approve the drawing, then manufacture
A drawing is produced and agreed before cutting starts. That drawing then exists for next time, so the second replacement is a straightforward repeat order.
Questions People Ask
Can a machine shop make a part without a drawing?
- Yes. Working from the physical part is standard practice. The part is measured, its material determined, and a drawing produced from it. If the original is worn or broken, the shop works the intended dimensions back from unworn surfaces and mating components rather than copying the damage.
What if the part is broken in pieces?
- Keep all of them. Fragments still carry most of the dimensional information, and the fracture surface indicates how it failed — which sometimes leads to a replacement made in a better material or with a larger fillet so it does not fail the same way again.
How long does reverse engineering take?
- The measuring and drawing stage is usually short compared with the machining. The real variables are material availability and how much inspection the part needs. Send photographs first and you can have a realistic answer before shipping anything.
Call before you drive.
337-837-2314 — or send photographs and we will tell you what we can do.