Concrete Polishing: Difference between revisions
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*Go slow - pigtails will shrink | *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. | *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. | |||
=Going Pro= | =Going Pro= | ||
*22", 12 pad sander - 500-1000 sf/hr rate - [https://newgrind.com/products/rhino-rl500-2/]. If there are 8 grind steps - that is a whole day job for 500 sf. | *22", 12 pad sander - 500-1000 sf/hr rate - [https://newgrind.com/products/rhino-rl500-2/]. If there are 8 grind steps - that is a whole day job for 500 sf. | ||
*15 amp - 11" width. [https://www.thesweeper.com/pg-280-grinder] | *15 amp - 11" width. [https://www.thesweeper.com/pg-280-grinder] | ||
Revision as of 07:51, 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.