I have a 4.5" angle grinder and a $8 DeWalt concrete wheel. The going is... slow.
This is about 20 minutes of grinding. It was a flat top cylinder when I started. I'm trying to make a deep cut cup, to make it a planter.
Anyone have any concrete grinding tips?
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Anyone have any concrete grinding tips?
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- volvolugnut
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Wear a good sealing mask. Breathing silicone dust is bad.
It may be better to use carbide tipped drill bits with a hammer drill to get the depth you want. Use about 3/8 bit and use water cooling. Do not let the bit get hot. Make a ring of holes close together but not overlapping- maybe 2 inch diameter. Then use a chisel to break out the rough cylinder. Expect it to take a long time and keep your patience.
volvolugnut
It may be better to use carbide tipped drill bits with a hammer drill to get the depth you want. Use about 3/8 bit and use water cooling. Do not let the bit get hot. Make a ring of holes close together but not overlapping- maybe 2 inch diameter. Then use a chisel to break out the rough cylinder. Expect it to take a long time and keep your patience.
volvolugnut
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Thanks VLN. I'll do that.
I wore an N95, but I'll get a sealed mask. Thanks!
I wore an N95, but I'll get a sealed mask. Thanks!
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Haha, so true.
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- Sveedy
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I think you could pour/cast a new one with the cup formed quicker than what your doing. And you could make a few of them different heights at that point. Looks like a piece of Sonotube with a bowl in the bottom would do quite nicely.
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It looks like it was the drop from a coring job.
Try to learn life's bad lessons vicariously through others.
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*
Sometimes if you can't win just join. If a little extra height is not an issue. Find or make a round sleeve and pour new concrete to join or surround the bottom piece while forming your ideal shaped upper planter. It will take too long to cut besides not achieving the shape you want.
*
Sometimes if you can't win just join. If a little extra height is not an issue. Find or make a round sleeve and pour new concrete to join or surround the bottom piece while forming your ideal shaped upper planter. It will take too long to cut besides not achieving the shape you want.
*
Blessings,
BKM
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2003 S80 T6 Transmission DIED
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BKM
2008 C30 T5 2.0 M66
2007 S60 2.5T - New Project
2003 S80 T6 Transmission DIED
2000 S70 SE Base - New Project
1998 S70 T5 Prior
1989 240 Wagon Prior
- MoVolvos
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And ear protection if you continue to grind. Will appreciated years down the road!
*
Blessings,
BKM
2008 C30 T5 2.0 M66
2007 S60 2.5T - New Project
2003 S80 T6 Transmission DIED
2000 S70 SE Base - New Project
1998 S70 T5 Prior
1989 240 Wagon Prior
BKM
2008 C30 T5 2.0 M66
2007 S60 2.5T - New Project
2003 S80 T6 Transmission DIED
2000 S70 SE Base - New Project
1998 S70 T5 Prior
1989 240 Wagon Prior
- MoVolvos
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MoVolvos wrote: ↑23 Feb 2021, 22:27 *
Sometimes if you can't win just join. If a little extra height is not an issue. Find or make a round sleeve and pour new concrete to join or surround the bottom piece while forming your ideal shaped upper planter. It will take too long to cut besides not achieving the shape you want.
*
*
Sorry missed that one.
*
Blessings,
BKM
2008 C30 T5 2.0 M66
2007 S60 2.5T - New Project
2003 S80 T6 Transmission DIED
2000 S70 SE Base - New Project
1998 S70 T5 Prior
1989 240 Wagon Prior
BKM
2008 C30 T5 2.0 M66
2007 S60 2.5T - New Project
2003 S80 T6 Transmission DIED
2000 S70 SE Base - New Project
1998 S70 T5 Prior
1989 240 Wagon Prior






