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-   -   Hollow Clay Brick - Need to Cut (http://www.diychatroom.com/f105/hollow-clay-brick-need-cut-181053/)

pilk00 06-01-2013 01:46 PM

Hollow Clay Brick - Need to Cut
 
See photos: http://tinypic.com/r/20iyl4p/5http://tinypic.com/r/2rwb3p0/5http://tinypic.com/r/2rwb3p0/5

Tried using a small Coleman angle grinder with a diamond blade, but it would have taken all weekend to cut one block in half. For one thing the blade wobbled on the shaft.

These bricks aren't made any longer as far as I know around here - eastern Ohio. I need to cut just 3 or 4.

Should I just rent a REAL machine?

Thanks!

pilk00 06-01-2013 01:59 PM

Photos
 
2 Attachment(s)
Attachment 71953

Attachment 71954

Canarywood1 06-01-2013 03:03 PM

You can pickup a 4 1/2" angle grinder at harbor freight for $15.00/$20.00 and a set of disc's come with it.

Windows on Wash 06-01-2013 03:05 PM

+1

That or take it to Home Depot and have them wet saw cut it.

You will just have to rotate the block 4 times but if you set up the fence on the table, should be quick and easy and have a clean cut line.

Daniel Holzman 06-01-2013 03:24 PM

You can cut this block using a circular saw and a diamond blade. The lowest cost diamond blades are about $15. Four cuts, you are done.

stadry 06-01-2013 05:06 PM

coleman makes an angle grinder ? had no idea,,, nevertheless, any small grinder w/4" diamond tile blade IS the tool,,, apron/vest stores sell 4" tile blades OR you can buy 'em off eBay from ' greens garage ' for $ 3 ea.

WOBBLING BLADE MIGHT BE A KILLER/MAIMER ! most likely reasons for the wobbles: 1, blade nut wasn't tight enough; 2, the blade was distorted; 3, blade's bent concave from not using the proper blade spacer behind the blade; or 4, shaft bearings are shot,,, normally those things spin @ up to 10,000rpm's,,, 1 broken segment can cut/tear like an m16's bullet - it'll tumble inside you !

pilk00 06-01-2013 05:12 PM

I think I'll try the diamond blade for the circular saw first.

Good to know HomeDepot cuts brick. Nearest one is 30+ miles away though, so I usually go to the local Lowes.

I had ordered the diamond blade for the Coleman angle grinder online. Might have worked except for the fact that it wasn't the same thickness as the standard blade that came with the grinder, which has 4 holes in it corresponding to the tightening holes.

I switched to the standard disc and it worked pretty well, but wore down to nothing cutting through just one side of one block :)

Appreciate all your prompt helpful responses!

joecaption 06-01-2013 05:17 PM

Sounds like you were using a masonry blade not a diamond blade if it wore down.

pilk00 06-01-2013 05:19 PM

itsreallyconc, not using the spacer sounds right. I could see the need for one, but didn't know they were available. Does Lowes carry them?

pilk00 06-01-2013 05:23 PM

Quote:

Originally Posted by joecaption (Post 1192795)
Sounds like you were using a masonry blade not a diamond blade if it wore down.

True. Is a masonry blade for cutting through mortar?

stadry 06-01-2013 05:30 PM

all of our grinders use a backing plate placed over the blade spindle,,, then the blade then the blade nut,,, the only time we don't use 'em is when we put on cup wheels.

abrasive blades have largely been made irrelevant by diamond blade technology imn-s-hfo :eek: we do all out cutting w/dri-diamonds,,, all they're short cuts like yours

pilk00 06-01-2013 05:47 PM

Another Question
 
Quote:

Originally Posted by itsreallyconc (Post 1192813)
all of our grinders use a backing plate placed over the blade spindle,,, then the blade then the blade nut,,, the only time we don't use 'em is when we put on cup wheels.

abrasive blades have largely been made irrelevant by diamond blade technology imn-s-hfo :eek: we do all out cutting w/dri-diamonds,,, all they're short cuts like yours

I think I have a very cheap angle grinder - that probably cost less than the diamond blade I bought separately.

You've sold me on dry cutting with diamond blades. In your opinion does it make sense to buy a diamond blade for my circular saw and do the job that way, or does this job really call for a good angle grinder?

thanks!

stadry 06-01-2013 06:01 PM

call greenie :laughing: rent a grinder :thumbsup:

stuart45 06-02-2013 05:45 AM

Years ago we used to fill them with sand, as with clay pipes, and cut them with a really sharp chisel, using gentle taps with the hammer. Took a bit of patience, but the diamond blade has sent that method to the history books.


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