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Old 09-21-2010, 05:32 AM   #16
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typical rental costs for hole saw


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You will also need a long shank cold chisel but since these are not too common .
probably more common than you think. Depot and Lowes both carry 12" cold chisels as well as a 12" flat utility chisel

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Old 09-21-2010, 09:18 AM   #17
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If RS has a SDS rotary hammer drill that is convertible to just hammer, he could also get an SDS chisel bit for it. That way, no mashed fingers (my specialty)
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Old 09-21-2010, 09:29 AM   #18
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Red, if you happen to know anyone in the plumbing trade they would have access to a core drill and diamond bit...I took one home from work a few months ago to drill a 6" diamater hole through my basement wall. It took 15 minutes to set up the drill and hose...3 minutes to drill the 6" hole through the center web of a split-faced 8X8X16 cinder block.
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Old 09-21-2010, 11:04 AM   #19
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One thing to do no matter what method you us is to drill a exploritory hole where you suspect to core of the block to be. Then put a bend on a wire and rotate it to probe and see if you have 2" or more on all sides of the exploratory hole. If you are off and hit a block cross web that means you will have to remove that too. You should be able to shift the center slightly so the original hole is within the area to be removed.

Even if you buy a block for practice there is no guarantee that block has the same configuration as what is actually in the wall. You could be practicing on a 2 core block when you might have 3 core block in the wall or a one core open end unit they have different core locations and sizes. There is no standard core arrangement of block since it is a local situation and compounded by the use of traditional older mold configurations since a small block producer is reluctant to buy a new $10,000 mold for one size block and have some obsolete inventory or add another shape to the product line.

Dick

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Old 09-22-2010, 07:00 PM   #20
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Ok ended up buying a big masonry bit, big hammer, and cold chisel. I'll probably tackle this on the weekend if it's not raining.
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Old 09-22-2010, 07:43 PM   #21
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Good luck!
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Old 09-26-2010, 01:41 PM   #22
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I started, taking a break now. I really should have bought ear protection I'm in a corner and it's very hard on the ears! Unfortunatly I hit a web in the block so I'll have to take that out. Not much choice where my hole goes as a wall is on one side and the electrical cut off and feed is on the other. The hammer and chisel works great though. So far I did not smash my fingers. Never realized but if I had a 1 inch hammer drill I could put the chisel in it.

Once I drill a hole right through then I'll finish the work from outside. Wont be as hard on the ears and it will be in an easier to work environment.

What is the best way to seal the cracks after I insert the pipe? I was thinking cement, but most of it is just going to drip down. Will "no more nails" or other caulking work?
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Old 09-26-2010, 02:57 PM   #23
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Hydraulic cement
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Old 09-26-2010, 09:11 PM   #24
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I'll go buy some tomorrow then. What is the consistency of this stuff, is it very liquidy or is it more like drywall? I'm wondering if I need to setup some kind of cardboard form or if I can just apply it directly.
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Old 10-07-2010, 11:33 AM   #25
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Red, Hydraulic Cement expands as it dries to seal cracks. It dries very very fast, so just mix a small amount of the powder with water in a throw away container to experiment with before you start.

Almost any hardware store wall have Hydraulic cement.
Here is one from DAP:
http://www.qualitydist.net/dap-14086.html
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Old 10-07-2010, 11:53 AM   #26
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Yep managed to find some. Fixed up the hole, and also added caulk around outside to be on the extra safe side. Was tricky to work with due to it's fast curing. The trick was to just mud it on and keep shaping it so it does not drip and then it started getting more like putty then next thing you know was hard. Turned out decent though.



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Old 10-07-2010, 02:03 PM   #27
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Red, Congratulations, looks decent
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Old 10-07-2010, 06:02 PM   #28
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Thanks. I kinda messed up on the top right corner, but the web was slightly where the pipe passes so it all came out as a chunk. Was quite the job, there there is definitely the sense of accomplishment especially now that the project as a whole is done.

This is outside:

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Old 10-07-2010, 11:49 PM   #29
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congrats.

All you need to do now is clean up the chunks...
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Old 10-08-2010, 07:29 AM   #30
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LOL yeah I still did not get to that. I don't think the Kool Aid guy is going to do it either.

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