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Old 11-27-2022, 06:40 PM   #1
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3D Printing of RV body parts

I have a 04 Fleetwood with a wheel skirt that has a couple cracks. I had it in a shop to see if it could be plastic welded but they informed me it couldn't without making it look bad. I've attempted to find one at any of the RV junk yards but have been unsuccessful.
I was wondering if anyone has had any body parts on their RV manufactured via a 3D printer. I'm looking for any options there are to getting this fixed or replaced. I've contacted one business about it but yet to hear back on a price or if they can do it. Fleetwood gave me a PDF diagram of the part but the business was looking for a CAD drawing or similar if possible.
I'd be interested in hearing of anyone's experiences with this. Parts for motorhomes seem to become obsolete rather quickly and it doesn't make sense to throw away a perfectly good motorhome for lacking one part.
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Old 11-27-2022, 06:51 PM   #2
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Have you checked out these guys?
https://www.icondirect.com/lookup-our-skirts/
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Old 11-27-2022, 10:58 PM   #3
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There is IRV2 phone app. It makes super easy to post a pic. Use same name and password.
So they are plastic ?. Does skirt have wrinkly finish like trailer skirts. I've welded, heated to reshape and used special rubber bumper filler on autos . Hard plastic after repair could be filled with bondo, but hard to recreate a wrinkle finish if it is.
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Old 11-28-2022, 08:00 AM   #4
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Take the part to an auto body shop. Highly likely the best path is to repair what you have. I assume the skirt is a fiberglass part.
They just cut the cracks so the part lays flat again, then scuff up the back with heavy grit sandpaper, clean and refiberglass the backside. Body plastic on the front.
Prime and paint.
You would not "3D" print the part. Highly unlikely you will get the CAD files. And 3D printing filament is not the correct material for a body part.
It would take weeks to print a large piece as well.
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Old 11-28-2022, 12:11 PM   #5
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A boat shop may have fiberglass solutions.

With no prior experience, I was able to mend damage to our rear bumper caused by the boat trailer trying to pass the MH in 2013.

I used Bondo with some reinforcement fabric on the back side. Then painted then damage to blend with the undamaged fiberglass. The repair is still good.

I sprayed the 2 part automotive base coat using a $7 Preval Sprayer from Home Depot. Then used rattle can clear coat.
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Old 11-29-2022, 06:42 AM   #6
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3D printing requires a 3D computer model. It is unlikely that any exist for older RV parts. If models existed, they would have been used for 5 axis milling of tooling to make composite parts. That method of producing tooling started happening in the 2005-2010 time period.
Your best bet is to repair the existing parts.
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Old 11-29-2022, 07:10 AM   #7
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So far I haven't heard anything from the company I send the file to for 3D. It is good to hear that there are those that have successfully repaired their coach parts. I'll be looking at the products suggested here and speak with a vehicle body shop. The part is plastic, not fiberglass but the back side is rough so should be a good surface to adhere substances to. Thank you everyone for your input.
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Old 11-29-2022, 07:22 PM   #8
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Hate to tell you but your likely not going to get a CAD or any dimensional drawing from any RV manufacturers. Most 3D printer bases are small like a foot square.
Share a pic, you would likely get better help. Take pic of backside you describe as rough. I know many members have done paint and body, some even molded fiberglass parts.
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Old 11-30-2022, 11:09 AM   #9
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Plastic Repair Putty

I missed the fact you have cracked plastic.

I also have not repaired such a crack except to fill a small crease in my car bumper.

https://www.amazon.com/Loctite-19991...827943&sr=8-10
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Old 11-30-2022, 11:29 AM   #10
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I have 2 sons that are mechanical engineers, and both use 3D printing extensively. I have no doubt that a 3D printed wheel skirt could be done, but it would likely be cost prohibitive. The right person could make a reasonable facsimile from your current skirt on CAD, but that would take an engineering-level education and significant time. The machine necessary to print something that big would cost in the hundreds of thousands of dollars, the material alone would be a few hundred dollars, and it would likely take days to print. Add all that up, and you're talking big bucks, IF you could find someone to do it.
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