New tool

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Allan
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First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

New tool

Post by Allan » Sat Oct 29, 2022 3:02 am

....for making laminated hood bows.

A friend needs a replacement for a poorly made five piece bow which let go at the glued-in corner pieces.

It is set to the width required for this one, but I have made one end adjustable so that I can make others when required.

I will post photos of the process as I make the first one. If the former works well, and require a no modification, I might even paint it!

Allan from down under.
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Petrah Phyre
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First Name: Sean
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Re: New tool

Post by Petrah Phyre » Sat Oct 29, 2022 3:46 am

Looks good. Looking forward to seeing the process.

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Mark Gregush
Posts: 5370
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* REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1948 F2 Ford flat head 6 pickup 3 speed
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Re: New tool

Post by Mark Gregush » Sat Oct 29, 2022 12:41 pm

Very nice! I have pondered something about this, do the sides need to be bowed in to allow for spring back or will putting them at right angles to the cross-piece work? Maybe for laminate construction that would not be an issue. :?:
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup


Topic author
Allan
Posts: 6609
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: New tool

Post by Allan » Sat Oct 29, 2022 7:48 pm

Mark, I believe laminated timber does not spring back like steam bent bows do over time if not restrained. Even so, I have left a 1/4" rise on the centre of the bow top, like the one I have to duplicate.

To the tinder shop today.

Allan from down under.


Topic author
Allan
Posts: 6609
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: New tool

Post by Allan » Sun Oct 30, 2022 12:44 am

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Photos first,so I don't stuff them up.

Today I cut some 2.5mm strips to start the bow laminations.The timber is variously known as Tasmanian oak, Victorian mountain ash, or Australian oak. It is neither oak nor ash. It is a clear grained Eucalypt hardwood, with no knots, gum veins or other flaws to affect the bending/laminating process.

I bent one strip dry to try it out first and it shook a little as I pulled it around the bend, but I thought it would be OK. I glued up two strips and stacked them, holding them together with a couple of rubber bands.

I started by clamping the bundle in the centre of the former, and worked outwards to the corners. The pistol type clamps were used to start the bends, followed by a G clamp to hold it. Then the pistol clamp was refitted further round the bend, followed by another G clamp. Working alternately at each end, and working progressively around each bend, it all worked remarkably well. One can never have too many clamps. The proof will come tomorrow when I take the clamps off to add more strips to the stack. All up I will need eight strips to make the bow a match to the broken one.

I have my fingers crossed!

Allan from down under.


tom_strickling
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Re: New tool

Post by tom_strickling » Sun Oct 30, 2022 6:04 am

Nice jig and process. We use C clamps in the U.S. Your shop looks very busy Nice job.
“The trouble with retirement is that you never get a day off.” – Abe Lemons.

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Mark Gregush
Posts: 5370
Joined: Sat Jan 05, 2019 1:57 pm
First Name: Mark
Last Name: Gregush
* REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1948 F2 Ford flat head 6 pickup 3 speed
Location: Portland Or
Board Member Since: 1999

Re: New tool

Post by Mark Gregush » Sun Oct 30, 2022 11:34 am

Looking great! Thanks for the reply and progress photos.
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup

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