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cretin:

--- Quote from: inthesticks on September 02, 2016, 07:25:43 PM ---Thank you for that Kyle, yes that was helpful I have formed small pieces with mallet and stump end, like the exhaust cap on my generator. I wasn't aware a planishing hammer could do a job like that but I can see how it could do the finishing to more rough work with mallet and sand bag.I have plans for planishing hammers as well and I would prefer that over a large English wheel, supply air and noise are not a problem. I can see a planishing hammer being more useful than just making one set of fenders. Thank you and again welcome.

Cheers
CB

--- End quote ---

No problem.
Yes, a planishing hammer can produce the same results.  The result you are going to get from the machine is the same in respect to the setup of the machine.  Have it set slightly tighter then parent material before stretching, and it will planish the material.  Have it set tighter, and it will stretch, and produce more crown.  They will both do the same work, the difference is preference.  If you have access to either, try them and see how you like it.  Worst case, build them both, try them and keep the one you like, or keep them both.  I personally like to have them both, and really can't give you a good reason why.

cretin:

--- Quote from: tom osselton on September 02, 2016, 08:56:03 PM ---I was thinking about building one I have in the past working with a guy but if I made one for me I would have it attached and hinged to the wall so as not to take up valuable space.  A planishing head you can make in less than a day, at least I did prototyping it.

--- End quote ---

That is definitely a good solution to space concerns, and something I need to look into for my home shop.  The main concern with that though is flex in the frame.  it is important to have a rigid frame, so that pressure is transferred directly to the sheetmetal, and not deflected through the frame.  But really, thats a concern for any frame, not just one hinged to the wall. 
I think that the hammering action of a planishing hammer is slightly more forgiving in the area of frame strength, although it is still very important.   

inthesticks:
Good info Kyle many thanks. Dug up some info and plans I had on planishing hammers and one is going on my long to-do list. While I was digging through that drive I also found the PDF file below. If I had filed it with my teardrop trailer plans I could have avoided all this. This guy does some nice work and if I can reproduce the rougher part of it the planishing hammer should help me to finish it off.

Cheers
CB

krv3000:
hi and welcume

howsitwork?:
Hello and welcome, I am fascinated by the discussions already, even if I won't use one and English wheel and techniques are useful.

Cheers Ian

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