Acetal for engine mount shims .

[doug748]

Thanks for that. Why tufnol?

Mainly because I have got some in the shed. ? For that job it won't crack, change shape, corrode or absorb grease and It's easy to work. Buy some sheet and you will find other jobs for it. I just took some angled spacers from under my pulpit legs, gave them a rinse and they looked the same as fitted 25 years ago.

I would not worry about what's the best, it just needs to do the job Lots of other stuff would be fine as well, as long as its not too soft; I think I have some 10mm ally, that would also be good.

 

[vyv_cox]

I don't think it matters very much either.

But I would probably use Tufnol for this application. For example:

Tufnol Sheet - Kite Brand 3/8" x 295 mm x 250 mm | eBay

Yes, Tufnol is a great engineering plastic.

 

[IanCC]

Mainly because I have got some in the shed. ? For that job it won't crack, change shape, corrode or absorb grease and It's easy to work. Buy some sheet and you will find other jobs for it. I just took some angled spacers from under my pulpit legs, gave them a rinse and they looked the same as fitted 25 years ago.

I would not worry about what's the best, it just needs to do the job Lots of other stuff would be fine as well, as long as its not too soft; I think I have some 10mm ally, that would also be good.

Yes, i have been reading up in tufnol and it looks the business. You say it is easy to work, even better. How do you cut it? I have some tufnol blocks and they are as hard as nails.

 

[Poignard]

I have Tufnol cleats on my boat, 55 years old, and Tufnol blocks. It's good stuff, easy to work with ordinary hand and power tools.

 

[vyv_cox]

Yes, i have been reading up in tufnol and it looks the business. You say it is easy to work, even better. How do you cut it? I have some tufnol blocks and they are as hard as nails.

It cuts easily with a hacksaw, can be filed and drilled without problem. Be careful with the dust as it has a bad reputation.

It carries load very well. I used it for pads under my Yacht Leg fittings. Installing Yacht Legs

 

[fisherman]

One builder used lead shims under a 16hp twin cyl Petter, didn't last long. Not sure how lead compares to acetyl. I used galvanised plate washers for a Lister 8hp for a big gap, they were fine but one did work loose. If the worse can happen it generally will.