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Post by rene020 on Mar 15, 2019 22:59:56 GMT
After doing a bit of research i couldn’t find any info of what is the best way to cut heat storage bricks from a radiator wich i plan to use for my hearth and wall/dome? what is the best tool/ blades to use for cutting them?
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baldywills
valid member
Started a whole new build, bigger and better than ever! 😂
Posts: 75
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Post by baldywills on Mar 16, 2019 7:54:27 GMT
After doing a bit of research i couldn’t find any info of what is the best way to cut heat storage bricks from a radiator wich i plan to use for my hearth and wall/dome? what is the best tool/ blades to use for cutting them? Hi, A disc cutter with a diamond blade will do the job. I get nervous with using a disc cutter/grinder so i went and bought a Evolution Rage 3 saw and added a diamond blade. Cuts through everything well but watch for heat, I used a spray bottle of water to help cool things down. Good luck Gary
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Post by oblertone on Mar 16, 2019 8:16:53 GMT
I used a cheap water cooled tile cutter with the guard removed to do mine, but I only did a few. If you're intent on doing a lot then maybe invest in something more substantial.
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Post by rene020 on Mar 16, 2019 17:29:53 GMT
thanks for the response i tried a water cooled tile cutter with the safty guard removed on a couple of bricks. not sure on how long the blade will last maybe need to invest in something more efficient.
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Post by downunderdave on Mar 16, 2019 22:08:14 GMT
thanks for the response i tried a water cooled tile cutter with the safty guard removed on a couple of bricks. not sure on how long the blade will last maybe need to invest in something more efficient. Make sure you insulate adequately between the supporting slab and the floor bricks.
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Post by truckcab79 on Mar 17, 2019 7:54:09 GMT
thanks for the response i tried a water cooled tile cutter with the safty guard removed on a couple of bricks. not sure on how long the blade will last maybe need to invest in something more efficient. Get yourself to Screwfix. Their own-brand Titan angle grinder is about £25. While you’re there buy an Erbauer diamond cutting disc for about £7. They are brilliant and last forever. Doubt you’ll need more than one for your build but if you do they’re cheap as chips.
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Post by rene020 on Mar 17, 2019 10:37:48 GMT
thanks for the response i tried a water cooled tile cutter with the safty guard removed on a couple of bricks. not sure on how long the blade will last maybe need to invest in something more efficient. Make sure you insulate adequately between the supporting slab and the floor bricks. i am trying to do it on a tight budget and am using reclaimed marerial where possible. i am thinking on the base paving slabs then vermicrete in hearth and bricks around that but maybe stick some airated concrete (thermoblock) down instead of the vermicrete as i can probably source that for free. Do i really need a ceramic fibre board under the hearth or is there an other insulating material that will be good between the vermicrete and the heat storage blocks. Would a 3mm layer of ceramic fibre paper do the same kind of job?
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Post by rene020 on Mar 17, 2019 10:44:34 GMT
thanks for the response i tried a water cooled tile cutter with the safty guard removed on a couple of bricks. not sure on how long the blade will last maybe need to invest in something more efficient. Get yourself to Screwfix. Their own-brand Titan angle grinder is about £25. While you’re there buy an Erbauer diamond cutting disc for about £7. They are brilliant and last forever. Doubt you’ll need more than one for your build but if you do they’re cheap as chips. sounds like a plan I can pick a titan angle grinder up for a tenner! screw fix sells tons diamond cutting discs from erbauer- i dont know which ones woukd be best for the heat storage bricks?
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Post by downunderdave on Mar 17, 2019 12:18:16 GMT
Get yourself to Screwfix. Their own-brand Titan angle grinder is about £25. While you’re there buy an Erbauer diamond cutting disc for about £7. They are brilliant and last forever. Doubt you’ll need more than one for your build but if you do they’re cheap as chips. sounds like a plan I can pick a titan angle grinder up for a tenner! screw fix sells tons diamond cutting discs from erbauer- i dont know which ones woukd be best for the heat storage bricks? Free thermoblocks sounds good. A big advantage is that they’re already dry. They should not exceed 500 kg/m3 (0.5 kg/litre) if doing a vermicrete slab use 5:1 ratio vermiculite: cement and 3 litres water for every 10 litres vermiculite. If using an angle grinder with a diamond blade remember that the brick dust is quite dangerous to inhale. Soak the bricks well with water before cutting and wear a decent respirator, not a paper dust mask. Don’t have kids any where nearby. Skip the 3 mm ceramic paper, it’s too thin to do much and it will compress with the weight of the floor bricks over it.
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Post by rene020 on Mar 17, 2019 14:24:15 GMT
thanks, slight problem they are toplite blocks, aerated concrete weigh 700kg/m3 is this a problem?
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Post by truckcab79 on Mar 17, 2019 14:43:05 GMT
sounds like a plan I can pick a titan angle grinder up for a tenner! screw fix sells tons diamond cutting discs from erbauer- i dont know which ones woukd be best for the heat storage bricks? Free thermoblocks sounds good. A big advantage is that they’re already dry. They should not exceed 500 kg/m3 (0.5 kg/litre) if doing a vermicrete slab use 5:1 ratio vermiculite: cement and 3 litres water for every 10 litres vermiculite. If using an angle grinder with a diamond blade remember that the brick dust is quite dangerous to inhale. Soak the bricks well with water before cutting and wear a decent respirator, not a paper dust mask. Don’t have kids any where nearby. Skip the 3 mm ceramic paper, it’s too thin to do much and it will compress with the weight of the floor bricks over it. This one. Assuming you’re buying the 4 1/2” angle grinder. The bigger version of the same disc of you’re ‘going large’. www.screwfix.com/p/erbauer-diamond-tile-blade-115-x-22-23mm/14120A smaller grinder is very versatile but bear in mind it doesn’t actually cut that deep. You can of course just cut both sides or cut/score and break with a chisel. A 9” grinder will cut all the way through, is generally much more powerful, but is comparatively less versatile for other jobs due to its size. The advice about cutting wet is valid but bear in mind it’s an electric tool so keep the water minimal. It will tend to spray it everywhere. Soak and then cut as suggested rather than pouring water while cutting.
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Post by rene020 on Mar 17, 2019 15:15:59 GMT
Thanks for the info! much appreciated
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Post by downunderdave on Mar 18, 2019 11:49:23 GMT
thanks, slight problem they are toplite blocks, aerated concrete weigh 700kg/m3 is this a problem? That would be denser than I'd prefer, but if they're free go for it. A mix of 5:1 vermicrete, considered strong enough for the job has around 500 kg/m3.Likewise my insulating firebricks are the same density (some vary considerably). Maybe stand the toplite blocks on edge so they're at least 4" thick, or cast a thinner vermicrete slab either under or over the hoplite blocks.
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Post by rene020 on Mar 18, 2019 13:31:17 GMT
thanks, slight problem they are toplite blocks, aerated concrete weigh 700kg/m3 is this a problem? That would be denser than I'd prefer, but if they're free go for it. A mix of 5:1 vermicrete, considered strong enough for the job has around 500 kg/m3.Likewise my insulating firebricks are the same density (some vary considerably). Maybe stand the toplite blocks on edge so they're at least 4" thick, or cast a thinner vermicrete slab either under or over the hoplite blocks. Thanks! they are already 4” thick when not layed on edge so i think its the way to go! If i put lets say an inch of vermicrete either on top or the bottom of the toplites do i still need to use a ceramic fibre board or cal sil board or would you recommend a buget friendlier option, before i put my heater storage bricks down in the hearth?
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Post by downunderdave on Mar 18, 2019 19:01:27 GMT
That would be denser than I'd prefer, but if they're free go for it. A mix of 5:1 vermicrete, considered strong enough for the job has around 500 kg/m3.Likewise my insulating firebricks are the same density (some vary considerably). Maybe stand the toplite blocks on edge so they're at least 4" thick, or cast a thinner vermicrete slab either under or over the hoplite blocks. Thanks! they are already 4” thick when not layed on edge so i think its the way to go! If i put lets say an inch of vermicrete either on top or the bottom of the toplites do i still need to use a ceramic fibre board or cal sil board or would you recommend a buget friendlier option, before i put my heater storage bricks down in the hearth? No cal sil board. The extra 1” vermicrete together with the aerated concrete blocks should be enough insulation. It must be mixed in the correct proportions. 10 parts medium grade vermiculite, 2 parts cement, 3 parts water. by volume. Mix dry ingredients well then add water slowly whilst continuing to mix. Best done in a barrow rather than a mixer.
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