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Old 07-20-2011, 06:00 AM   #1
BMW_Hatchback
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Red face my $25 one piece underpanel

So I wasn't going to spend $100+ for a pre cut sheet of plastic and some nuts and bolts for a 15 year old car that's going to see some track time, so I ordered myself a sheet of ABS and made my own for ~$25. The sheet of ABS was $22, and the hardware was about $5 from advance auto.

No real DIY, the pictures should explain themselves. Thanks for looking

the ABS sheet uncut




step one, traced the shape of the mouth on the backside of the cover


laid down the lamb chops to shape the backside of the panel

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Old 07-20-2011, 06:01 AM   #2
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making the cut



final step is drilling and mounting with bolts, nuts and washers, or zip ties work too.









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Old 07-20-2011, 06:01 AM   #3
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The design is still early in its stages, I know it's ugly as heck, but it's better than no panel. I plan on polishing up the tracing soon and give it another go since I have another M bumper to mess with while this one is on the car.

I'm very confident in the quality of the material and the mounting, it's not going anywhere. Some of the edges are still kinda rough, but I'll sand them down some before putting the bumper back on.

Once again thanks for looking. If anyone wants anymore details feel free to PM me
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Old 07-20-2011, 06:15 AM   #4
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Awesome! I'll be doing this for sure.
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Old 07-20-2011, 06:17 AM   #5
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Quote:
Originally Posted by cooljess76 View Post
Awesome! I'll be doing this for sure.
I'll send you the cardboard mock up like I promised. You can edit from there so it's perfectly symetrical
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Old 07-20-2011, 06:34 AM   #6
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Nice going to do this fo sure
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Old 07-20-2011, 05:54 PM   #7
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Nice! Where did you source the plastic from?
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Old 07-20-2011, 06:34 PM   #8
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Very nice! This could be a movement. I think you should send me a copy of the template too
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Old 07-20-2011, 11:03 PM   #9
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i was planning on doing the same
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Old 07-21-2011, 02:25 AM   #10
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awesome job, my underpanel is currently intact *sorta* but if I ever bust it I'll probably go a similar route
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Old 08-31-2011, 07:01 PM   #11
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Great job!

Here's the under side of my '99 ti with the M Techic bumper and splash guard.
Attached Thumbnails
Click image for larger version Name:	IMG00190-20110826-1815.jpg Views:	379 Size:	52.2 KB ID:	11671  
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Old 08-31-2011, 07:02 PM   #12
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nice! how'd you make that
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Old 08-31-2011, 07:09 PM   #13
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I didn't make it. It's the oem splash guard for the M Technic bumper. There's a piece that fits inside it that fits against the radiator bottom as well.

bavauto.com sells them bmw part # 51 71 2 250 643
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Old 08-31-2011, 07:11 PM   #14
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that looks great
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Old 09-01-2011, 02:44 AM   #15
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Looks like a factory piece, very nice!
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need to do - fix door panels, paint job, MORE MONEY!!
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