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Subject:Re: Doing another rear aluminum bumper
From:Alistair Bell
Date:Tue, 2 Aug 2022 08:08:58 -0700

Four years :-)

Well , since I measured the stock bumper and drew first model .

Then this spring I had bumper 3D scanned. More or less fit my measured model.

Then more computer modelling , time wasting .

The main part of the bumper is quite fast. Cnc router cut panels, 3, then held in curve on a jig, top and bottom plates tacked on. Then full weld. I tig welded this one, but I’d mig the next.

Router a chamfer on top weld, flap disc grind the bottom weld to blend.

It was the endcaps that took the most time. I have I think four failed versions. Flat pattern cnc cut, then brake press to bend, then a front face and a wee little rear face welded. Grind and blend etc. 

Now that the endcaps figured out, not so bad , or slow .

So all the hard work done. I’d say less than 4 hours to make one , not counting cnc machine cut time .

Ab

> On Aug 2, 2022, at 7:59 AM, Stacy Schneider <vwcrewman@gmail.com> wrote:
> 
> 
> That is really nice, you must have 40 hours in it? 
> 
>                           Stacy 
> 
>> On Tue, Aug 2, 2022 at 7:54 AM Alistair Bell <albell@shaw.ca> wrote:
>> Wanted something lighter than my previous and with no trailer hitch. Trying to mimic the stock steel bumper.
>> Got one made well enough to powder coat and use. 
>> https://shufti.blog/2022/08/01/vanagon-making-another-aluminum-bumper/
>> 
>> Alistair 
> -- 
>    1989 Swedish Tristar with Aluminum gates and Atiwe 16" Wheels.
>     Oldest son is an Eagle scout.