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Thread: Hollow grinder

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    Senior Member KsStraightShaver's Avatar
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    Default Hollow grinder

    So I found this hollow grinder on Craigslist an wondered if it was worth a damn. I kinda wanna start making razors even if I have to start with blanks an files until I can forge my own so this looked like it may be a good start for a grinder as that's what it's designed for but it also kinda likes cheap. Any thoughts/ suggestions?

    Wen "wet"
    Wheel machine
    Hollow grinder
    Sharpener
    Honer
    Sharpen scissors dress & restore screwdriver tips sharpen pointed tools at precision angles dress sharpen or grind axes

    Features
    Full 3" wet grinding wheel
    Gear driven
    6' cord
    Precision protractor calibration
    Rigid steel adjustable tool rest
    Continuous cleaning water applicator and wiper
    Powerful universal motor
    Built in scissor guide
    Double insulated
    Recessed switch
    break resistant housing
    Dual locking knobs
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    Admin & Forum fixer Bruno's Avatar
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    It'll probably take a long time to grind anything with that.
    But aside from the speed and the details: imagine you are grinding a razor with that, will the tang be in the way in a manner that makes it impossible to grind?

    I can't see it properly in this picture, but that could be an issue.
    Happiness is a field, littered with the mangled corpses of your enemies. - Vlad III of Wallachia

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    Senior Member blabbermouth 10Pups's Avatar
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    The wheel is very small in dia.
    A double hollow is something like 4" over 5"
    Good judgment comes from experience, and experience....well that comes from poor judgment.

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    Senior Member KsStraightShaver's Avatar
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    Thank you Bruno for your input I just figured since it was advertised as such it would work an it would do the job just fine. As for it being slow since I'm thinking of starting out, slow would be good so I don't rush it.

    10 pups do you mean that the top wheel should be 4" an the bottom should be 5"?

    I also found this one what do you think of this one?
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    I’ve used something similar to the grizzly (i.e. a Scheppach TIGER2500S) for the final grinding on a couple of razors I have made out of old files.

    It’s painfully slow, and you will want (need) something faster to the initial hollow grinding of the hardened steel. I used a 6’ bench grinder with a Norton 3X wheel, they run really cool, but do throw of a bit of dust.

    I also modified the water grinder to make it run twice as fast (by putting a collar around the drive shaft) and put a courser/narrower wheel on it (10x1 inch 46 grit bench grinder wheel) to improve its cutting power (compared to the 200 grit 2 inch wide wheel it came with).

    I had the water grinder lying about (from a previous life sharpening wood working tools) and it did the job, but I wouldn’t buy one for the sole purpose of grinding razors.

    If I had to start out again I would probably just use a bench grinder with a CBN wheel (CBN Grinding Wheels| D-Way Tools), they run absolutely cool (no need for water cooling) and they are explosion proof (so you can take the guards of and run a bigger wheel on a small grinder).

    FYI I’m in the process of upgrading from the Scheppach, to something similar to (although homemade and not nearly as aesthetically pleasing as) the water-cooled grinding wheel used by mastro livi.

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    Senior Member KsStraightShaver's Avatar
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    Thank you DrDalton. I kinda thought that I was just gonna have to shell out some cash to build something better instead of trying to get by with something cheaper I just wasn't sure since these items claim to be built for these kinds of projects. That's why I came here so I could get good input not just guessing.

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    Senior Member blabbermouth 10Pups's Avatar
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    I just meant the smaller the radius the more difficult to hollow. The smallest I have heard of anybody using is 4" and 5" to do a double hollow. That would be grind the bottom half of the blade to 5" dia. and then on top of it with a 4 " wheel. Not too many do that. I use 6 and 8" wish I had a 10" . If you look at blade profiles you will see the radius I am talking about. Some of the wedges look like over 18" dia. You can do it with a smaller wheel it's just a PITA IMHO :<0)
    Good judgment comes from experience, and experience....well that comes from poor judgment.

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    Senior Member blabbermouth Geezer's Avatar
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    For What it's worth. I have ground a few blanks with the WEN/ Sears type machines.
    They are nice for a refund on an older wedgey blade. I did cut one wheel down to about 1.5"dia.
    Slow and there is barely enough clearance for scales on a long blade. Cheap at garage sales.
    But! Damn good for a starter!
    ~Richard
    Last edited by Geezer; 07-13-2016 at 12:54 AM.
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    Senior Member bluesman7's Avatar
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    A lot of us started with pretty simple tools. Check out post #28 here; North Central Texas Meet

    Charlie Lewis had many grinders made from shopping cart wheels and such.

    For what it is worth we are all using 2"x72" belt grinders now.
    spazola and Geezer like this.

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    aka shooter74743 ScottGoodman's Avatar
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    My first razors were made with what I could obtain with what money I had. Here is a thread on my first razor using a 4x36 belt grinder and a sears wet grinder like you posted above. Yes, the 2x72 grinders are the cats meow...but if you use the brain that God gave you, you can make do: Scott's trying to make a razor???
    Geezer and bluesman7 like this.
    Northeastern Texas & Southeastern Oklahoma Mentor/Helper...PM me if I can assist you.
    God Bless,
    Scott

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