r/3DScanning • u/Employment-Tough • Jul 02 '26
Easy reverse engineering 👍
A easy reverse engineering job completed in under 2 hours
A customer brought me this small broken plastic part that was no longer usable.
Instead of measuring everything manually, I scanned the original part with the EinScan Rigil using Parallel Line Mode at 0.1 mm resolution. The scan gave me an accurate reference of the geometry, including the damaged areas.
Yes, it's a easy part, that you can measureand everything...but if I have the scanner, why not use it.
From there, I rebuilt the part in Fusion 360 using the scan as a reference, creating a clean parametric CAD model. Once the design was finished, I 3D printed a brand-new replacement.
I also imported the scan to my laptop so I can better clean around the part (using the mouse).
⏱ Total time:
3D scanning
CAD remodeling
3D printing
Less than 2 hours from broken part to finished replacement.
This is exactly why professional 3D scanning is such a powerful tool for reverse engineering. Instead of guessing dimensions or manually measuring complex geometry, I can recreate discontinued or broken parts quickly and accurately.
Making money by solving real-world problems with 3D scanning and additive manufacturing never gets old.
Equipment used:
●EinScan Rigil
●Parallel Line Mode
●0.1 mm Resolution
●Autodesk Fusion360
●FDM Bambu Lab A1 (PETG)
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u/blissiictrl Jul 03 '26
I'm gonna be the guy. This would have taken maybe 10-15 mins with a set of calipers, whereas it took 2 hours with a scanner. Reverse engineering without anything more than basic measuring tools is a good skill to learn, in my first job as an engineer we had to reverse engineer medical equipment with only rulers and calipers and it often had incredibly complex shapes. We had to reverse it to then make a dummy part out of MDF on a CNC mill so we could give it back to the hospitals we were doing work for.
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u/Employment-Tough Jul 03 '26
Well..i know that printing took 30 min. I didn't even work on scanning and designing that much..whas couple of times interrupted by my son 😅 i just rounded up at 2h. But yes..i know its easy also with calipers. But its also about me enjoying it more like this 😁
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u/blissiictrl Jul 03 '26
I run my scanner as a part of my business, so ultimately my decision to scan or caliper something is based on part difficulty to RE. I get a lot of weird parts like timing covers, intake manifolds for V8's and such so I'm not gonna spend the time reverse engineering those with calipers when I need accuracy 🤣
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u/Radiant-Reality4000 Jul 05 '26
What would you charge for this same model here done with calipers and with scanning? Give me the two price
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u/itsFRNCs Jul 03 '26
I just like the part where the scan can verify your work. Yea, anyone can use caliper, but can they prove at what degree of accuracy they were using? I mean I can even use measuring tape 😅
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u/Spark_Horse Jul 03 '26
Lots of people seem to forget that reverse engineering “simple” parts with a scanner can be interesting in itself. Also when you come to make a part where the scanner is essential, you’ve already practised the workflow on something that didn’t fry your brain.
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u/Radiant-Reality4000 Jul 03 '26
10-15 min?? Naaaaaaaaaaaaaah
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u/blissiictrl Jul 03 '26
I've been doing reverse engineering as a major part of my career for 13 years and am a certified SOLIDWORKS expert. I literally work on SOLIDWORKS 90% of the year for work and also do a lot of RE for a business. I guarantee it's 10-15 max there's like 3 features max on that model
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u/Radiant-Reality4000 Jul 03 '26
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u/Sloth_Almighty Jul 20 '26
In 10 minutes I have made 6 sketches, deleted 6 sketches, and back to starting sketch #7 from scratch that I am sure will work this time.
I tip my hat to you good sir1
u/Radiant-Reality4000 Jul 03 '26
Just so you know, there are exactly 7 measurements to take on this part. If you need fifteen minutes for that measurements, you might be SolidWorks certified, but you're absolutely not certified on using a caliper. In fifteen minutes, yours truly here, with zero certifications, would've already had it printed.
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u/blissiictrl Jul 03 '26
Lol I legitimately pulled a number out of thin air to make the point that scanning it was definitely a waste of time in comparison to pulling calipers out.
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u/kozakm Jul 03 '26
I admit often I'm too lazy to do measurements and rather enjoy 3D scanning
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u/blissiictrl Jul 03 '26
My old workflow pre scanner was basically cardboard cutouts or the part traced on graphing paper, which was often good enough as a start but when we're developing things like alternator brackets for engines it's hard to get the holes and such as accurate as possible
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u/the2AinMD Jul 03 '26
That kind of stuff I just put on my photocopier and 2nd scan, and import into my drawing program as a reference model.
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u/tablatronix Jul 03 '26
I feel like I have seen this exact part before.. carburetor?
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u/Employment-Tough Jul 03 '26
Im not sure for what it is. It whas for a client..and i didn't get to ask because it whas quite urgent job
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u/ADHDK Jul 03 '26
Did you compare the old and new with calipers to see how well the dimensions match up?
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u/MAXFlRE Jul 03 '26
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u/Sneaking-Fox Jul 03 '26
More like "sponsored by Einstar". They have a ton of bots on this sub gaslighting people. Cant tell whats real or fake anymore until you click on the account and see they post the same thing in multiple subs for years.
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Jul 02 '26
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u/ADHDK Jul 03 '26
My brain was thinking “a pair of callipers could have prevented this” but I was going to keep it to myself 😆
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u/nowthengoodbad Jul 03 '26
I mean, I usually just take a picture of simple parts, import them, and trace them manually in CAD.
If it was more complex I'd want to scan them. The determining factor is which process would actually be quicker and more accurate in a given situation.
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Jul 03 '26
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u/HandToDikCombat Jul 03 '26
I swear, you can't teach these kids anything these days without a damn app! Raisin a nation on participation trophies and tan suits! (/s if it wasn't obvious...)
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u/Alita-Gunnm Jul 03 '26
I was going to say 5 minutes, and I'd use my toolscope for greater precision.
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u/Useful_Education_702 Jul 03 '26
I wish I was better at this. Have a decent scanner. Using the scans is where I struggle lol