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  #111  
Old 05-10-2019, 08:20 AM
Marc Bourget Marc Bourget is offline
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I'm confused, this post is about building a buck?


Looks like a start on furniture to me!
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  #112  
Old 05-10-2019, 12:39 PM
Jon Thompson Jon Thompson is offline
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Default Very Nice

Nicely done!
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  #113  
Old 05-10-2019, 02:54 PM
skintkarter skintkarter is offline
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Thanks Steve - hopefully some aluminium to show shortly.

The 2002 did crop up on my facebook feed Axel, but hadn't really had a look at it. Presume is composite?

Haha Marc - no more 'woodworking' (MDF so it's not really wood..) for a while thankyou. Mind you, there is the idea of a semi-production Ducati Cafe Racer requiring a flowforming buck and then there is my long-term T51 Bugatti project in the corner of the shed.

Thanks Jon. Funny that with all of my gear, it was a 60 year old spokeshave which turned out to be the tool of choice for the reverses on the air dam.
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  #114  
Old 05-12-2019, 02:48 AM
skintkarter skintkarter is offline
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Default So 10 minutes in and I'm out of talent...

Help please chaps.

Started out trying to make the centre upper panel in one piece and already I'm out of talent.

Made the paper template and then used a kart slick in the E-Wheel to contour the panel. Wheeled from each end to the middle to get the shape desired. Contour is great, but of course the ends are now sitting 1" plus off the buck.

Do my learned friends think that I should persevere as a one piece panel, or is there some cunning wheeling trick which will lower the outside edges?

Sticking it in the folder and giving it a crank in the middle was obviously a fail.

Thinking that I should make my life easier and make in two pieces with a dressed weld down the middle.

Transition of the stations are flat, but obviously curved front to rear as per the front apron of the car.

Thanks.

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  #115  
Old 05-12-2019, 03:04 AM
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neilb neilb is offline
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oo we have aluminium

erm.... if you are out of talent, i will be no help , but if you have fitment at the centre but so much curve it is lifting the ends then a little shrink in the centre i think. if you have enough extra material then shrinking in that you will be cutting off any marks left by the shrinking.

looking forward to your progress though richard, keep goin towd lad
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  #116  
Old 05-12-2019, 03:44 AM
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neilb neilb is offline
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sorry richard, where about's is it lifting away from the buck? on the flats or on the curve?
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  #117  
Old 05-12-2019, 04:52 AM
skintkarter skintkarter is offline
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sorry richard, where about's is it lifting away from the buck? on the flats or on the curve?

As per the photo Neil. Curvature is pretty right, but somehow it needs shape in the middle to pull the ends down. Not sure how to stretch it in the middle and still leave a ridge?

Should I be putting in a flat anvil, wheeling it though on one side of the line whilst pulling down on the end?

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  #118  
Old 05-12-2019, 05:09 AM
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neilb neilb is offline
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if you push the ends down to the buck you will see what happens in the middle.

have you tried to push the ends down and see what is happening?

if you tip the back edge, where the 'v' is at the centre that should take up some of the extra material and pull the ends down

or not lol, i would give it a go, but then again i did make a 1/4 panel for the same side 4 times
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  #119  
Old 05-12-2019, 08:47 PM
skintkarter skintkarter is offline
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Cheers Neil. Pretty much it turns inside out when you push the ends down onto the buck - the middle looses any curvature it had. Tried a few different things last night with probably too much Chardonnay on board and now it's completely buggered.

I'm leaning more towards making it in two pieces and the only conundrum now is where to plan the weld. Options are dead centre, so I'll file from each side, or offset by 20mm or so. If I offset it enough I can perhaps tack it up on the buck, whereas if I'm over the MDF, it doesn't end well...

I've got 4 full sheets on the rack, so I can make a few cockups
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  #120  
Old 05-12-2019, 09:49 PM
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Jack 1957 Jack 1957 is offline
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Richard, I'm not sure I completely understand what you're trying to do but from the picture with the sheet laying on the buck, I think you are trying to make what would look like a lang section of a tube but you ended up with a concave bowl. If that's the case, you don't want to stretch the middle, you want to stretch along the edges lengthwise. More material along the edges will make the sheet lay down. Stretching in the middle will just make a deeper bowl.
You said you might have ruined the first attemp, so test this method on that sheet. You'll see what I mean.
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