Concrete Polishing: Difference between revisions
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*HF variable speed polisher 1 - $44 - 10A - [https://www.harborfreight.com/7-in-10-amp-variable-speed-polisher-64807.html] | *HF variable speed polisher 1 - $44 - 10A - [https://www.harborfreight.com/7-in-10-amp-variable-speed-polisher-64807.html] | ||
*High speed concrete/steel abrasive pads - 4" - only $6 for 5 - [https://www.menards.com/main/tools/power-tool-accessories/abrasive-wheels/sontax-reg-4-polishing-wheel-5-piece/81714/p-1523864442126.htm] | *High speed concrete/steel abrasive pads - 4" - only $6 for 5 - [https://www.menards.com/main/tools/power-tool-accessories/abrasive-wheels/sontax-reg-4-polishing-wheel-5-piece/81714/p-1523864442126.htm] | ||
*7" diamond pads are much more expensive - 800 grit for one - $30 - [https://www.amazon.com/Polishing-Concrete-Travertine-Terrazzo-Countertop/dp/B07KRM24JG/ref=sr_1_1_sspa?dchild=1&gclid=CjwKCAjwr_uCBhAFEiwAX8YJgUrX7nvZpme2ZvIycxOl4HjTjPdyMXokCr1ZqVKWVoSgV9YSeY38VRoCFzwQAvD_BwE&hvadid=232919957230&hvdev=c&hvlocphy=9023315&hvnetw=g&hvqmt=e&hvrand=7030982730290787120&hvtargid=kwd-341568290852&hydadcr=23785_9915451&keywords=7+inch+concrete+polishing+pads&qid=1616833315&sr=8-1-spons&psc=1&smid=A1FGMTXWSPT19O&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyRDE1UFc3WTY0Q05aJmVuY3J5cHRlZElkPUEwNjUzNDkyMUpVOUdDNEk2N1Y5TCZlbmNyeXB0ZWRBZElkPUEwNTA0MTY0MlczQkdTRlpUQjUxUyZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=] | |||
=Concrete Countertop Details= | =Concrete Countertop Details= | ||
Revision as of 08:23, 27 March 2021
- 9 Days to polish -
- Polished vs epoxy -
Sourcing
- Orbital sander pads - [3]
- Use 6 of these at one time mounted to a common bar, if you have open space to work with. Each is under 4 lb, so 24 lb total + mounting bar. 3A each for a total of 18A
- Start with bulk grinding of rough spots - [7] - using a regular grinder:
- Start with 50 grit dry - $10 for one - [8]
Diamond Cups
How to Use an Orbital Sander
- 15 seconds per foot travel rate:
Lessons:
- collect dust, so you don't get larger abrasive spots from dust clumps
- Go slow - pigtails will shrink
- Calculations - if 15 seconds per foot, we have 39 passes lengthwise for one passthrough - meaning 1248 feet - meaning 5.2 hours per 500 sf pad. Save 20% by not doing under stairs and cabinets, you have 4.7 hours per pass. 5 sander gang gets that down to 1 hour. Definitely could use a holder for 6-10 sanders. If they can be ganged - that would be awesome.
- Don't skimp on the grits - go up more slowly, which is actually faster.
- Get the dust out - it clogs the sandpaper, and dulls it faster as you need to do more work
- Get extra velcro pads
- Store sander with pad on, so you don't flatten velcro hooks.
Other Options
- Good thread - [13]
- Car polisher will work, and so will a variable speed grinder with diamond pads.
- Get this grinder with variable speed can be found elsewhere cheaper. [14]. Pads - [15]. Pad holder - http://www.toolocity.com/4-back-holder-rigid.aspx
- HF variable speed polisher 1 - $44 - 10A - [16]
- High speed concrete/steel abrasive pads - 4" - only $6 for 5 - [17]
- 7" diamond pads are much more expensive - 800 grit for one - $30 - [18]
Concrete Countertop Details
- Includes filling voids with epoxy binder + concrete, then sealer, then wax, and silicone between slabs to fill in cracks.