Core drill dryer vent thru cinderblock
pizza
| Posted in Construction Techniques on
Has anyone ever rented a core drill to drill the dryer vent hole thru cinderblock? If so, any advice or tips on doing that?
How do I anchor it to the basement concrete floor-what type of anchor bolts should I use?
The hole is 4″ to 4 1/4″ dia
Thanks in advance.
Replies
I usually drill the web with several holes, knock out the plug, insert pipe or pvc sleeve, morter up around it.
If you want to core drill and here's the expensive solution. Call a concrete cutting company-they'll have a rack they bolt to the wall and drill away.
If you have some sort of rack on your drill, bolt that to the wall.
Patch the anchor holes.
A great place for Information, Comraderie, and a sucker punch.
Remodeling Contractor just outside the Glass City.
http://www.quittintime.com/
Here's what I did. It wasn't nearly as bad as some said it would be. It was easily done in about 10 minutes time with no bolting the rig to walls or floors. I just rented a Hilti hammer drill and a 4" dia concrete core drill. I carefully measured where I needed to cut the hole through the cinder block without hitting the web. The handheld Hilti hammer drill was a beast but went through with no problem. Cost = 74 dollars. I was happy.
for cinderblock you can buy a 4.25 hole saw and use it and then just toss it might be cheaper in the long run and only one trip to the store - just need the half inch drill
First, drill a hole in a piece of 3/4" plywood. Anchor it to the wall where you want the hole. It will keep the hole saw in place. Use a concrete bit, or maybe a regular bit will work if you don't mind trashing it.
Whenever I drill concrete or tile, I use running water as a lubricant. It allows the bit to last at least ten times as long.
Edited 9/26/2007 3:26 pm ET by Sasquatch
Wow that's a lot of work for a block wall hole.
I'd mortar a sleeve in or the dryer pipe direct. Drilling a series of smaller holes would keep it neater. I'd avoid the web.
I did just this about two months ago. I rented a Hilti core drill and a 4" core bit for about $60. It has a connection for a water hose to attach to it. I just held the drill straight and let the core bit balance itself against the wall, like pressing a cup against it. That made a perfectly level and straight hole all the way through. That water just flies everywhere at first but once it gets going it just weeps out of the hole being made.
I have made holes with a rotary drill, making several holes and chiseling out the middle. It is kind of hard to make a neat hole this way. The core drill makes a perfect hole and takes less time.
I will probably need to rent that core drill again soon to make a dryer vent hole. The hole I made was for a bathroom make up air vent.
Handyman, painter, wood floor refinisher, property maintenance in Tulsa, OK