We recommend that you use the HDSD until the timber just starts to show through and continue until you have completed the section you want to strip. The result looks a bit ugly but you haven’t unnecessarily removed much timber. You then need to switch to the LDSD to remove the remaining paint. This disc leaves fewer score marks which can more easily be removed with a finishing disc. These discs last discs will do the final surface preparation leaving the boards almost like new and ready for painting. In some cases the 60 grit disc will strip acrylic painted surfaces back to sound paint without the need for stripping. Just try them to see how they work in each different situation. It is false economy to use the HDSD disc then wait for the timber to dry before dry sanding with an orbital. Just get straight in with the 60# or 80#, hose down and the timber is virtually ready for painting. When the timber has dried you will easily see any bits you have missed with the Finishing disc and these can easily be touched up with your dry sander. Most of the hard work is done by the HDSD so it is a lot quicker to use our recommended three disc process. For example you will probably spend around 15 minutes covering 5-8 sq meter with the HDSD. The removal of the remaining paint with the LDS will take about 5 minutes per sq meter and the FD80 will take about 1 minute per square meter. So the ratio of discs is about 10 HDSD, 5 LHSD and 1 FD80.
There is no need to use chemical strippers with this disc.
Using worst case scenario of achieving only 10 sq m per disc without stripper:
- $3 per square meter
- 5 minutes per square meter if used in conjunction with the HDSD (as described above)