Thread: Bulk cutting of 2" hook and loop sanding discs?

Dunno Ern, but what would happen with the muffler pipe and say 5 layers of sandpaper? Would it be a disaster, or do you reckon it would work ok?

2" holesaw shouldn't be that big a deal. The 3" ones are the buggers to get hold of.

Cheers,
Dave

Thanks for the thought Dave.

Getting one clean cut pounding on the sharpened pipe is rare, and the paw complains too much anyway. Time for horsepower rather than pawpower.

How about making a press along the lines of the can crushers that plans appear for every now and then. Just put your sharpened pipe in and an end grain anvil underneath the sheet and give it a squeeze.
Just a thought.
Regards.

Ern, have you thought about using a hollow punch? I know 50mm ones are available but can't for the life of me locate them in Melbourne. My old man has one and makes disks of carboard out of them. Can imagine they'd go through sandpaper ok.

Other than that, If I were looking for a cheap fix, I'd use some scrap ply, add 50mm holes and sandwhich the sandpaper between and drill through the holes.


Hope those couple of ideas help.

I have a hand press that cuts out discs of fabric. I don't know whether exhaust pipe would withstand the pressures, but a decent bit of high carbon pipe or tube with a properly dressed edge should be fit to punch out at least five at a time even in a small hand press.

HI RSSER
I made my own sandpaper cutter 50mm exhaust pipe expanded to 53mm and welded 50mmx 25mm plug in top, I held it in scroll chuck and sharpend with a flat file have cut 100s without having to sharpen it i use a block of redgum end grain,I had them on the forum about 2 years a go.
regards john.

I think it was Hughie using the hole-saws Ern. I'm still using an old pair of scissors so I'll watch this thread to see if there are any ground breaking ideas floating around.

Hi All,
My thoughts were to get hold of a small 2 Tonne Jack, put into a base of some kind . You would have to put a foot on the Muffler Pipe, & you don't have to turn the jack upside down. Like was said, to use a piece of Red Gum or whatever, & it should do up to 8 sheets, surly.
Made something similar many years ago, & put 2 springs on it to lift the Jack back to the start, when finished.
Having a bit of trouble here explaining myself, but I hope you get the drift.

Ern, Hole saws are the way to go as most are made from carbon steel with a HSS edge added. Always go for the welded ones as they have a heavy back end ideal for thumping with a hammer


https://www.woodworkforums.com/f8/hol...g-discs-66063/


Hole punches will set you back a few bob on the bigger sizes. Thats why I never bothered to use them. Exhaust pipe is way too soft and will deform rapidly with pressure, thats is design so it can be bent. No doubt you've found that out already.

I'm the same as TTiT and using an old pair of scissors but a Registered Professional Woodturner I know uses the hole-saw method to great effect.

As you've noted, he uses a Bi-Metal saw with the teeth ground off and sharpened edges.

I can remember that he did not use a 50mm (2") but rather one slightly larger (52mm or 53mm) as when you grind the edge you are creating the inner diameter as the sharp edge, whereas the drilled hole will be measured to the outside edge.

I've converted a couple of them for ball turning, but instead of buying them I blagged them off a plumber friend who had worn them out and were otherwise destined for the bin.

Thanks for the links and tips folks.

Dragonfly, yep, the good 'un is 54mm OD, c. 50mm ID.

Hi Ern,

Here is a link to the sandpaper man for wad punches for 50mm and 75mm for cutting hook and loop. It would save a lot of mucking around in making them. Hope it helps. Wad Punches | The Sandpaper Man

Cheers
Darren

Thanks Darren. They look the goods.

For the moment I'll pursue the hole saw idea having bought the bits.

If you want to get them closer to home we have them here Ern

Just noticed you signature Ern, some nice photos of work there.