Dear Mr. Susak sir, you've encouraged me to go to the local flea market and find an oldy moldy grinder and make a disc sander! Thanks very much for the video. Hope you are much better now. Blessings, pierre from New Mexico

This is not only a good idea, there are tones of good ideas here, but this is also very doable, smart and useful! Thanks.

I love your dog and also that you're reusing old stuff to make new stuff. Glad you are feeling better. Nice tool.

Lots of helpful ideas particularly using the sander to "lathe" the discs. Glad you're on the mend.

Thanks Mark. I was planning to just throw away my 1\4 HP 35 year old bench grinder. I followed your instructions and now have a brand new sander working perfectly !!

Well done, clever use for an old tool. What is even better is that you didn't modify the grinder at all, so it can always be turned back into a grinder.

I just love when you have all these tools available to built one tool under 5$

Nice job man. It's good to see someone using their head to figure out how to make something they need instead of just running to the store to buy someone else's design.

Stay healthy my friend. I hate it when I get sick and can't work in my shop. Great project!

Hope you get better. Using the sander to achieve a perfect disc is pure genius. I have learned something that I will use in the future. Thank you.

The idea with the velcro was wonderful for the cylindrical spindle sanders for the drill press.

Good idea. I've just fitted new bearings to my dad's old bench-grinder I was keeping as a spare. It now has valid space justification on my shop.

Great idea! I've been contemplating how to add a motorized sander to my arsenal for cheap, and mainly without having to put hours into building something new, and I just happen to have a semi-ancient grinder laying around that is perfect for this. Thanks for posting this, it's exactly the fix I need!!

Brilliant cheap idea Mark

Good video. Sorry to hear that you were ill, glad to see that you are making a good recovery. I hope to are fully recovered soon.

Cool. Especially liked the way you rounded off the discs.

Yo Mark, you've just saved like a gazillion old bench grinders, for thos who have two or three, they are gonna be using all sort range of sanding grades there are (from super-coarse to super-fine) for a super quick deburring and sanding time, tnx for sharing it with the world!!!!

Fantastic !!!!! i have 3 old bench grinders in the workshop and never wanted to sling them out, going to make this but as we have a lawnmower workshop i'll make the frame and mount out of steel , thanks again

Great Job Mark. The disk sander looks fantastic for under $5... Look forward to the table saw build

Cool project! It will be nice to have two different grits. For the spray lacquer, be sure to turn upside down and spray until the spray stops (about a second or two). This clears the nozzle out. Hope you continue to feel better!

You had me when you brought your "helper" out. Nothing like a Dachshund to brighten up your life. Brilliant build BTW

A tiny amount of cash a little imagination was all it took! Nicely done. You've got a perfectly functional tool for pennies on the dollar!

Brilliant. Thank you. We’ll done Champ ! 👍

Starting to make mine today. Excellent idea. I plan to add mitre slots in my version.

good idea! for the dust collection: just use a bunch of PVC pipes from below (where the void is anyway) and possibly ad a 2 way valve to focus the power on the side you're working on

Cool idea. Spot on. And a great way to reuse an old tool.

Great idea! I think I've just found a new use for my bench grinder, at least one side of it, as in leaving the one side a grinder and the other a disk sander, or easily convert back and forth as needed, which ever one is used the most. Also, the riser platforms could be made to contain a drawer each, so the sanding disks, these wheels, the nuts and washers, the grinder stones, etc., could be stored in them.

Awesome, going to do that shortly, got a couple old grinders in the barn.

Like your pup my mom just loved the little guys 👍

I hope you are healing and feeling well. I like this idea. May have to keep my eyes open for an old grinder.....

Its a very good build and looks like it works very well. Thanks for sharing James

Great attitude and end result

oh my god. it is a great idea... I'm actually going out hunting some garage sale for a tool like that to start with. I always see such mole stone (?) grinders and I finally know what to do with one of them.

Good job Mark.

Brilliant idea. Clear and easy to understand too. Thank you. Hope you are completely better now. Love your dog:)

Good job relly hope you are felling better GOD BLESS

Excellent Mark I need the bench grinder I have now.I'll look for a cheapie on Craig's list and try this project Thanks for the video.

great video and process. Thanks for sharing

That is pretty clever. I may do that myself.

Well done, and great Idea for modification! Will try this out too!

Nice job Mark.

Glad you are feeling better!!!

Good job Mark, simple but effective. Hope you feel better. A+++

Glad to see you well enough to be posting. I think I have to make one of these.

Good practical straight to the point. Like it.

Interesting to know how he managed to balance the wheel, it looks pretty nice and even... not wobbly at all.. great job.!!

Glad you're feeling better. Thanks for the how to!

Super Einfall Klasse Arbeit tolles Gerät

Disc sanders do the job...good work, you will use it for sure.

It's great that quickie time lapse can make this seem effortless & you did a great job. PLEASE emphasize hand safety because people may think they can move this fast & get careless!

Yes I will keep my eyes open for old bench grinder and I will make this thank you, plenty of ply hanging around. I will hinge the top bases for easier access to discs, other than that, its how I will do it.

Great vid Mark....good no-nonsense instructions and no annoying musak. Really neat & simple design. I Like the idea of different grit on each end. I have spare bench grinder.....this is my next project. Cheers

This thing actually looks safer than a bench grinder. Tool hacks don't usually end up that way.

Simple project, but impressive result. Well done!

I have an old bench grinder I've been kicking out of the way for months in my shop. This is a great idea!!!!! Thanks God Bless

I made something similar with a buffing pad but I threaded the wood and glued the pad directly on to it. Scrap wood and a few pennies worth of glue and I can use a buffing pad that was hanging around my shop for probably a decade or so.

Use the bottom of an old shoe to de-gum the sandpaper. cheap, and works like a charm.

simple and effective. Very good. congratulations.

good video thanks for sharing looks great

Good project, laid out well. Thanks for sharing. Mike

Glad you are feeling better, good video

Great job Mark. I can pick up a 2nd hand 8", 3 quarter horse grinder for 30-40 bucks here in NZ and that is definitely my next project. Cheers.

What a great idea, I've been thinking about making one for a while but using a bench grinder hadn't occurred to me - they're cheap as chips too! Great project, well done.

Great build. Thanks. Glad to learn that you’re on the mend.

Brilliant! I love it. A great way to re-purpose an extra bench grinder. One of the few videos I've seen that I plan to imitate immediately! Also a good way to make use of an old one after you upgrade, since as you point out, a somewhat underpowered grinder will still perform acceptably as a disc sander. Your video also shows that if the disc is slightly imperfect, it doesn't seem to cause excessive vibration, which is good to know. One thing I'd mention, keep in mind the dust from MDF is really nasty, so if you don't have dust collection yet, consider wearing a good dust mask. I think that stuff is like 30-40% adhesives, and it also seems to yield finer particles. Who knows what it does to your lungs? It's a little more difficult to clean up around the shop than regular sawdust, as if it were sticky or something - which also makes me a bit more anxious about inhaling it.

Wow, congratulations Mark, I've been folowing you, from the last 3 months, and your proyects and videos are great!!! I've made the Cyclone bucket, as you, and works amazing. Even the vaccum is a little shop vac (under $20 USD, in MXP are $500, there are no cheapest like this.) And works great. Thank you Mark. Best regards from México.

Great design. Nice and simple and doesn't take up too much space. I think I'll see about making one this week. I just bought a ¾ HP grinder to do stuff like this. Mine's a single speed like yours and I'd love to make the speed adjustable. Grinders are so versatile. I want to build an attachment like Green Saw to use it as a drum sander too. A belt sanding attachment would be awesome too. So many ideas and plans and not enough time

Nice! Those old grinders are built like tanks!

Tip: when using screws to clamp two pieces of wood while gluing, make sure the screw has a smooth shank below the head. The smooth part should be at least as long as the piece of wood is thick. That way, the head of the screw pulls the top piece down onto the bottom piece, without any threads holding the top piece back.

Dynamicly engineered and outstanding edit.

SWEET!! I'll have to have a look at making something like this in the spring when I can get in my shop without freezing, It's 12 degrees out there today, I have an extra grinder or two in the shop just waiting, also plan on making a belt sander/grinder with a couple skateboard wheels & a motor from a furnace/washer/dish washer etc. Great Video!! ROCK ON!!! Gary/Hk

Cool......I am going to make one for myself....thanks!

Good job...the price is right...bet it was good to do it yourself, esp after being sick. hope your well now.

Nicely done.

Hi mark, good video re using an old grinder, I note from your glue up of the mdf discs that you used screws to provide clamping pressure which is good, but a tip for the glue is to use sea salt on both surfaces, when put together the gritty t texture reduces the slipping effect when glueing 2 pieces of stock together

Thanks Mark , Awesome Ill be doing it, Just an idea might be to add hinges under the sides of your riser shelves , then you could just flip them up to change pads

Glad to see you back on your feet. I think the best part was meting your apprentice..... but the rest of the video was educational as well.

I've been wanting a bench grinder, but now I want two! LOL Nice video.

Very very very excellent I like it

Nicely done

Nice video. Glad your feeling better.

Thanks for the tip to use a sheet of cardboard to align and attach the sanding disc to the wheel. I always get mine off center and out of balance.

Great video Mark!! Welcome back!! Pleased to hear you're feeling better!! All the very best Dave

Fantastic idea! I've got a bench grinder that my dad used to use. I may make slightly larger sanding heads on it, though.

Nicely done. Feel better.

Pretty cool if one owns all those other workshop tools - and a workshop!

Great idea. I want to build the same but for one side only and then use velcro to hold my sandpaper on it...

Brilliant idea, well done!

Very nicely done. Good job. Need one of these!

Nice work!

glad you're better mate.good job.i'll build one now.thumbs up from Pasadena,Maryland.USA cheers.

Nice job. Hope you are well.

Nice video. It's easy to make something for $5 when you have everything you need!

Great job. I hope you get full health soon.

Very good idea, I have two of those, I´m going transform one and I would have two spare stones.

great idea. nice job.

Very good job.

Very nice build. I am going to build one myself like yours. THANKS.

Make sure you take time off Mark, down time is soooo important to your own well being. Take pup for a long walk and get some fresh air.

👍🏻👍🏻 great project. Glad you’re on the mend.