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my attempt at building a grinder


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hello,

 

as i'm new to this forum, let me first introduce myself,

My name is Clem, i live in Belgium and i work as a mechanical design engineer.

and of course I'm also a hobbyist blacksmith and knife maker

 

 

 

for some years, I've been thinking about buying a decent knife grinder, but every design i see I'm always thinking, for that price (or cheaper) i can build it myself

and I wanted a machine that can work with 75x2000mm and 2x72" belts capable of vertical and horizontal belt position

 

 

so I finally got the time to design it and should get the laser pieces tomorrow

I tried to make it as cheap as possible without compromising quality.

the frame is made out of laser cut and bended steel plates, almost all the rest are standard available components from internet shops, all to get the price as low as possible and make it as easy as possible to make at home.

 

the only thing I have to make myself is the drive wheel, and drill the necessary holes in the square bars for the tools

 

ATELIER185GRINDER1.png

ATELIER185GRINDER2.png

 

ATELIER185GRINDER3.png

 

ATELIER185GRINDER4.png

 

I hope that the parts will be ready soon, so i can start building and testing.

 

hope you al like it and please let me know if there are any suggestions

 

 

clem

 

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looks good and has alot of variations , the tensioner may be a weak sop but thats just looking at the drawings you have

Id try it and see what happens

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Work rest can springy, I think. May not have enough rigidity. (opinion)

In the process, under the belt (marked in red) will be formed pit. How to deal think?

 

aVPogFg.png

 

PS: Welcome to the club!

Edited by Vladislav
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Work rest can springy, I think. May not have enough rigidity. (opinion)

In the process, under the belt (marked in red) will be formed pit. How to deal think?

 

aVPogFg.png

 

PS: Welcome to the club!

 

hello,

to prevent the forming of a pit, i'm intending to glue a piece of ceramic glass to the guide (green).

I also ordered 3 pieces for every machine

you may have a point in the rigidity of the workrest. i'll have to find out once it is finished.

I also ordered 5 pieces of the workrests per machine, so I can make some variants.

regards and thanks for the suggestions

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Hello, Clem. Can also try the iron plate instead of glass (or better - a cast-iron plate). Much higher thermal conductivity, easy to replace, easy to repair. And not so fragile.

Components will attach by means of welding?

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