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Will it be safe? Advice appreciated

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Forum topic by barneyrubble posted 12-13-2018 04:17 PM 539 views 0 times favorited 11 replies Add to Favorites Watch
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barneyrubble

2 posts in 254 days


12-13-2018 04:17 PM

Topic tags/keywords: disc sander tablesaw question safety

Hi. I am a hobby woodworker and have a no-name brand cheap table saw that is not used that I would like to turn into a badly needed disc sander. Problem is that it has a short arbor that won’t accept anything much thicker than a standard saw blade. Every home built sander of this type I have come across on the net uses a wooden disc with sandpaper glued on but I don”t think that is an option here as the wood would have to be be way too thin. My question is, has anybody any experience or knowledge of using an old saw blade with sandpaper glued to it to achieve the same end? I keep thinking about it but am just not sure if it would be a safe thing to do. Any suggestions or comments would be most useful in helping me make a decision. Many thanks.


11 replies so far

View Lazyman's profile

Lazyman

3748 posts in 1842 days


#1 posted 12-13-2018 04:29 PM

Not safe unless you can cut the teeth off of it so it is round. You can buy a flat disc specifically designed for that purpose here.

Note that the table saw is probably going to run much faster than dedicated disc sanders typically do so it will be more likely to burn.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View jutsFL's profile

jutsFL

182 posts in 296 days


#2 posted 12-13-2018 04:45 PM

Ya, that motor is going to way too high in the RPM range for what you’ll want. May want to look at a speed control option for it to slow ut down.

-- I've quickly learned that being a woodworker isn't about making flawless work, rather it's fixing all the mistakes you made so that it appears flawless to others! Jay - FL

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LittleShaver

565 posts in 1074 days


#3 posted 12-13-2018 04:50 PM

I haven’t seen one in a while, but they do sell a flat disk for a table saw that you can attach sandpaper to. Using and old blade seems to me to be just asking for a trip to the ER.

-- Sawdust Maker

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Andybb

1954 posts in 1058 days


#4 posted 12-13-2018 05:06 PM

I’d resist the saw blade option. If you do decide to make a disc sander you are going to need to use a variable speed controller or pulley combo to slow that baby down. Literally hundreds of DIY disc sanders on youtube. In fact, so many that I can’t even find the one I made to link to.

Found it. But there are much easier ones to make.

-- Andy - Seattle USA

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BlasterStumps

1364 posts in 894 days


#5 posted 12-13-2018 05:10 PM

With very little materials, a 1725 RPM motor, and a little time on your part you could make a disc sander. I found a motor this last summer and mounted a flange to the shaft then added a disc to it. The table I made on it doesn’t tilt but I have other tools that will take care of that. It is cheap, easy and even has dust collection. My cost for the 3/4 HP motor was $10. The rest was stuff I had. Several DIY videos on YouTube.

-- "I build for function first, looks second. Most times I never get around to looks." - Mike, western Colorado

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pottz

5791 posts in 1439 days


#6 posted 12-13-2018 07:58 PM

this is probably what your looking for,much safer than sticking sandpaper on a spinning blade-ouchhh!

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

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HokieKen

10437 posts in 1593 days


#7 posted 12-13-2018 08:40 PM

I have one of those discs^ that I’ll send you if you want it. Just PM me your address. I got it a long time ago and used for aligning my arbor with the miter slot. Never actually put sandpaper on it. But, it’s only been used once and is just taking up space. It’s yours for the price of shipping. As others suggested, you might want to see about slowing the motor down though. If it’s a belt drive, just a pulley change might be all that’s needed.

-- Kenny, SW VA, Go Hokies!!!

View barneyrubble's profile

barneyrubble

2 posts in 254 days


#8 posted 12-14-2018 02:01 AM

Thanks to all who commented here and you have confirmed my suspicions that it is not a good idea so I will find another way. I’d rather be safe than sorry. And many thanks HokieKen for the offer of the disc ( didn’t know about them before so learned something) but I shan’t be needing it now as I will try something else. I live in Thailand and the shipping plus the huge tax I would have to pay made it a bit of a non starter for me anyway but thanks all the same.

View bondogaposis's profile

bondogaposis

5496 posts in 2806 days


#9 posted 12-14-2018 02:52 AM

Not a good idea, way too many RPMs for sanding.

-- Bondo Gaposis

View 000's profile

000

2859 posts in 1354 days


#10 posted 12-14-2018 02:57 AM

I understand the RPM’s are too high,
so how do they get away with making a disc specifically for your table saw?

I know the pros and cons, but I guess it works for some things. Takes a light touch.

View TheFridge's profile

TheFridge

10859 posts in 1941 days


#11 posted 12-14-2018 03:14 AM

Kinda like belt sanders.

In the hands of someone with experience, it’ll work great and cut down the time it takes to do an operation.

In the hands of a novice, it’ll have you building new parts or modifying your project before you know it.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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