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 Post subject: Trowel sharpening
PostPosted: Fri Feb 09, 2018 12:28 am 
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Hello everyone,
I was given a brand new Kraft Elite trowel a few weeks ago. They're American, pretty similar to Marshalltown. Since I am only going to use it for laying on and flattening, is there any point trying to sharpen it's edges (to wear it in to some extent)? I have a Refina Superflex, so I won't really use it for finishing. I do have a heck of a lot of diamond, carborundum, Japanese, etc stones, but thinning that edge down will take me quite a while. I also have a stationary belt sander, but I might end up overheating the metal. How do you break your trowels in?


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 Post subject: Re: Trowel sharpening
PostPosted: Fri Feb 09, 2018 5:30 pm 
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If I had to use anything other than a pre-worn marshalltown then I'd break the edges with some 120g paper and put a 1-2mm radius on the corners as well.



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 Post subject: Re: Trowel sharpening
PostPosted: Fri Feb 09, 2018 9:04 pm 
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Cantseeitfrommyhouse wrote:
If I had to use anything other than a pre-worn marshalltown then I'd break the edges with some 120g paper and put a 1-2mm radius on the corners as well.


Mine came says pre-worn too, but it doesn't really look pre-worn. I know some people's trowels are pretty sharp and mine doesn't cut at all. Yes, I rounded the corners, but the edges will probably need quite a bit of work. I can probably get it to shave, I am just not sure if it's worth it.


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 Post subject: Re: Trowel sharpening
PostPosted: Sat Feb 10, 2018 12:14 am 
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Does it have a curve to it side to side? In my experience that seems to be the main difference between the flat cheap ones and the marshalltown gold ones. I think the edges become sharp as a result of continued abrasion when used extensively, but I don't know if that's of any actual merit. Flexibility is probably more important. And less so for laying on I'd say.


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 Post subject: Re: Trowel sharpening
PostPosted: Sat Feb 10, 2018 12:52 am 
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Yes, it does have a curve, and I rounded its corners off. I am still pretty young, so I doubt anyone will let me plaster extensively. :D I am planning to use it for laying on and flattening in.


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 Post subject: Re: Trowel sharpening
PostPosted: Sat Feb 10, 2018 9:13 am 
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GandalfMB wrote:
Yes, it does have a curve, and I rounded its corners off. I am still pretty young, so I doubt anyone will let me plaster extensively. :D I am planning to use it for laying on and flattening in.


I wouldn't worry too much about the edge if you are only going to lay on with it because you will eventually progress to a speedskim rule that will do the job better and faster than any trowel.

https://www.youtube.com/watch?v=I4BK3mmjLo8

Mike

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 Post subject: Re: Trowel sharpening
PostPosted: Sat Feb 10, 2018 2:30 pm 
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London mike 61 wrote:
GandalfMB wrote:
Yes, it does have a curve, and I rounded its corners off. I am still pretty young, so I doubt anyone will let me plaster extensively. :D I am planning to use it for laying on and flattening in.


I wouldn't worry too much about the edge if you are only going to lay on with it because you will eventually progress to a speedskim rule that will do the job better and faster than any trowel.

https://www.youtube.com/watch?v=I4BK3mmjLo8

Mike


That's a fair point, Mike. I am actually thinking of getting one. It's a little embarrassing that I haven't used one yet, but there's a first time for everything. They seem to have different blades. If they are also good for rendering, I will definitely buy one. I assume that will require a different blade. Are they made of plastic? No metal blades?


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 Post subject: Re: Trowel sharpening
PostPosted: Sat Feb 10, 2018 4:34 pm 
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This is where most plasterers get their stuff from and there are metal blades as well

https://www.plasterers1stopshop.co.uk/p ... ulas-c-256

Mike

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