Home |
Search |
Today's Posts |
|
#1
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
I am interested in a Porter-Cable random orbital 6" polisher 7424 (6
speeds). By switching the 6" backing pad with a 13700 5" sanding pad, I can convert it into a 5" random orbital sander. By the look of its picture with the sanding pad, it surely looks just like any other angle sander. I am wondering whether I can use it to sand down a fiberglass skin to taper its edge. Any idea? Let me explain what I am trying to use the sander for: I am going to lift the fiberglass skin of a deck, and then replace the core material. After this, I need to put the fiberglass skin back in place, and I am supposed to use fiberglass cloth and epoxy to bridge the cut on the fiberglass skin. I need to sand and taper the two edges along the cut in order to level the patch with the rest of the fiberglass skin, and that is what I intend to use the sander for. Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Thanks in advance for any info. Jay Chan |
#2
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
Of course, I also want to use it as a random orbital polisher. I just
want to know if I can also use it as a sander in the way that I have described above. Sanding takes a lot more torque than polishing. Maybe it will stall too easily, or won't keep the random pattern? There are random orbital sanders, of course. High-horsepower gadgets. |
#3
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
If you have shop air, then a random orbital sander is very cheap. They work
great, but they need a pretty good sized compressor. Roger http://home.insightbb.com/~derbyrm "Richard J Kinch" wrote in message .. . Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Sanding takes a lot more torque than polishing. Maybe it will stall too easily, or won't keep the random pattern? There are random orbital sanders, of course. High-horsepower gadgets. |
#4
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
Richard J Kinch wrote:
Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Sanding takes a lot more torque than polishing. Maybe it will stall too easily, or won't keep the random pattern? There are random orbital sanders, of course. High-horsepower gadgets. According to the manufacturer instruction for Porter-Cable 7424 polisher, it is designed for both polishing and sanding. Moreover, the spec of this polisher (such as amp) is identical to the spec of their very similar sander/polisher (7336SP). Please see the spec shown he http://www.porter-cable.com/index.asp?e=547&p=2804 Therefore, I am confident that it should be able to be used as a sander. The only thing that I want to know is whether I can use it to bevel a tapered edge alone the edge of a fiberglass skin. Having said that, I have decided to choose Porter-Cable 7336SP instead of 7424. The 7336SP comes with both polishing gears and sanding gears in one package. And its sanding pad is 6" (instead of just 5" if I convert 7424 into a sander). And the price is the same as the combo of 7424 plus the sanding pad. Thanks for questioning me about the 7424. This leaded me into looking for the spec of 7424, and this in turn leaded me to find 7336SP that is a better deal anyway. Jay Chan |
#5
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
The Porter-Cable 7224 looks like a Porter-Cable 7336 with a different pad.
Same amps, same rpm's. That series (733x) comes with both 5" and 6" pads, both PSA and Hook&loop. I have both and use the 6" more in my work. YMMV. There's a counterweight that's calibrated to the weight of the pad, so you'll have to change that, too. As useful as thePorter-Cable random-orbit sander is, it's probably not going to be effective at grinding teh bevel in your glass deck skins. For that job, a low-cost choice would be a 4-1/2" mini-grinder such as the Porter-Cable #7430 with a #36 disc. Wear protective gear. You will want the R-O sander for cleaning up your skins and for subsequent finishing. wrote in message oups.com... I am interested in a Porter-Cable random orbital 6" polisher 7424 (6 speeds). By switching the 6" backing pad with a 13700 5" sanding pad, I can convert it into a 5" random orbital sander. By the look of its picture with the sanding pad, it surely looks just like any other angle sander. I am wondering whether I can use it to sand down a fiberglass skin to taper its edge. Any idea? Let me explain what I am trying to use the sander for: I am going to lift the fiberglass skin of a deck, and then replace the core material. After this, I need to put the fiberglass skin back in place, and I am supposed to use fiberglass cloth and epoxy to bridge the cut on the fiberglass skin. I need to sand and taper the two edges along the cut in order to level the patch with the rest of the fiberglass skin, and that is what I intend to use the sander for. Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Thanks in advance for any info. Jay Chan |
#6
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
Please explain the reason why you think the 7424 random-orbit sander is
not a good tool for beveling a tapered edge along the edge of a fiberglass skin. I am not questioning you; I know that you must have a lot of experience about this. I am asking this just trying to figure out which features of a sander that work for beveling and which don't. I already have a low cost angle-grinder. But I have a feeling that it is a bit aggressive for fiberglass skin. People who have the right touch probably can use it just fine. I probably will do more damage than good using it. Therefore, I am looking for a sander that comes with a pad. Jay Chan Jim Conlin wrote: The Porter-Cable 7224 looks like a Porter-Cable 7336 with a different pad. Same amps, same rpm's. That series (733x) comes with both 5" and 6" pads, both PSA and Hook&loop. I have both and use the 6" more in my work. YMMV. There's a counterweight that's calibrated to the weight of the pad, so you'll have to change that, too. As useful as thePorter-Cable random-orbit sander is, it's probably not going to be effective at grinding teh bevel in your glass deck skins. For that job, a low-cost choice would be a 4-1/2" mini-grinder such as the Porter-Cable #7430 with a #36 disc. Wear protective gear. You will want the R-O sander for cleaning up your skins and for subsequent finishing. wrote in message oups.com... I am interested in a Porter-Cable random orbital 6" polisher 7424 (6 speeds). By switching the 6" backing pad with a 13700 5" sanding pad, I can convert it into a 5" random orbital sander. By the look of its picture with the sanding pad, it surely looks just like any other angle sander. I am wondering whether I can use it to sand down a fiberglass skin to taper its edge. Any idea? Let me explain what I am trying to use the sander for: I am going to lift the fiberglass skin of a deck, and then replace the core material. After this, I need to put the fiberglass skin back in place, and I am supposed to use fiberglass cloth and epoxy to bridge the cut on the fiberglass skin. I need to sand and taper the two edges along the cut in order to level the patch with the rest of the fiberglass skin, and that is what I intend to use the sander for. Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Thanks in advance for any info. Jay Chan |
#7
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
The sanding discs for that tool are of middling light paper(D or E wt.) and
available from maybe 60 grit up. The pad is a firm sponge. The #60 will take forever to shape a bevel and the sharp edge of a glass skin will tear up the paper and the pad. Use as fine a grit as you like on the minigrinder and be careful.. It doesn't need to be pretty. You'll be adding glass back into the bevels. You will need the RO sander, but not for this. wrote in message oups.com... Please explain the reason why you think the 7424 random-orbit sander is not a good tool for beveling a tapered edge along the edge of a fiberglass skin. I am not questioning you; I know that you must have a lot of experience about this. I am asking this just trying to figure out which features of a sander that work for beveling and which don't. I already have a low cost angle-grinder. But I have a feeling that it is a bit aggressive for fiberglass skin. People who have the right touch probably can use it just fine. I probably will do more damage than good using it. Therefore, I am looking for a sander that comes with a pad. Jay Chan Jim Conlin wrote: The Porter-Cable 7224 looks like a Porter-Cable 7336 with a different pad. Same amps, same rpm's. That series (733x) comes with both 5" and 6" pads, both PSA and Hook&loop. I have both and use the 6" more in my work. YMMV. There's a counterweight that's calibrated to the weight of the pad, so you'll have to change that, too. As useful as thePorter-Cable random-orbit sander is, it's probably not going to be effective at grinding teh bevel in your glass deck skins. For that job, a low-cost choice would be a 4-1/2" mini-grinder such as the Porter-Cable #7430 with a #36 disc. Wear protective gear. You will want the R-O sander for cleaning up your skins and for subsequent finishing. wrote in message oups.com... I am interested in a Porter-Cable random orbital 6" polisher 7424 (6 speeds). By switching the 6" backing pad with a 13700 5" sanding pad, I can convert it into a 5" random orbital sander. By the look of its picture with the sanding pad, it surely looks just like any other angle sander. I am wondering whether I can use it to sand down a fiberglass skin to taper its edge. Any idea? Let me explain what I am trying to use the sander for: I am going to lift the fiberglass skin of a deck, and then replace the core material. After this, I need to put the fiberglass skin back in place, and I am supposed to use fiberglass cloth and epoxy to bridge the cut on the fiberglass skin. I need to sand and taper the two edges along the cut in order to level the patch with the rest of the fiberglass skin, and that is what I intend to use the sander for. Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Thanks in advance for any info. Jay Chan |
#8
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
I see. This means if I use a random orbital sander to sand the bevel
edge, I may risk damaging the sanding pad, and I will take a long time to get the job done. If I use an angle grinder with 36-grit fiber disc (that I assume has some give), I may find that it may not sand as aggressive as I originally thought -- I thought it was being used like it had a metal cutting wheel; that's why I said it might sand too aggressive; I didn't know that I can put a fiber disc on it. This sounds good. I already has an angle grinder, I just need to get the 36-grit fiber disc to find out if it is the right tool. Thanks for the info. I appreciate that. Jay Chan Jim Conlin wrote: The sanding discs for that tool are of middling light paper(D or E wt.) and available from maybe 60 grit up. The pad is a firm sponge. The #60 will take forever to shape a bevel and the sharp edge of a glass skin will tear up the paper and the pad. Use as fine a grit as you like on the minigrinder and be careful.. It doesn't need to be pretty. You'll be adding glass back into the bevels. You will need the RO sander, but not for this. wrote in message oups.com... Please explain the reason why you think the 7424 random-orbit sander is not a good tool for beveling a tapered edge along the edge of a fiberglass skin. I am not questioning you; I know that you must have a lot of experience about this. I am asking this just trying to figure out which features of a sander that work for beveling and which don't. I already have a low cost angle-grinder. But I have a feeling that it is a bit aggressive for fiberglass skin. People who have the right touch probably can use it just fine. I probably will do more damage than good using it. Therefore, I am looking for a sander that comes with a pad. Jay Chan Jim Conlin wrote: The Porter-Cable 7224 looks like a Porter-Cable 7336 with a different pad. Same amps, same rpm's. That series (733x) comes with both 5" and 6" pads, both PSA and Hook&loop. I have both and use the 6" more in my work. YMMV. There's a counterweight that's calibrated to the weight of the pad, so you'll have to change that, too. As useful as thePorter-Cable random-orbit sander is, it's probably not going to be effective at grinding teh bevel in your glass deck skins. For that job, a low-cost choice would be a 4-1/2" mini-grinder such as the Porter-Cable #7430 with a #36 disc. Wear protective gear. You will want the R-O sander for cleaning up your skins and for subsequent finishing. wrote in message oups.com... I am interested in a Porter-Cable random orbital 6" polisher 7424 (6 speeds). By switching the 6" backing pad with a 13700 5" sanding pad, I can convert it into a 5" random orbital sander. By the look of its picture with the sanding pad, it surely looks just like any other angle sander. I am wondering whether I can use it to sand down a fiberglass skin to taper its edge. Any idea? Let me explain what I am trying to use the sander for: I am going to lift the fiberglass skin of a deck, and then replace the core material. After this, I need to put the fiberglass skin back in place, and I am supposed to use fiberglass cloth and epoxy to bridge the cut on the fiberglass skin. I need to sand and taper the two edges along the cut in order to level the patch with the rest of the fiberglass skin, and that is what I intend to use the sander for. Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Thanks in advance for any info. Jay Chan |
#9
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
Get several. They're a buck or so. Start with a fine one and escalate as
you feel more aggressive.. wrote in message oups.com... I see. This means if I use a random orbital sander to sand the bevel edge, I may risk damaging the sanding pad, and I will take a long time to get the job done. If I use an angle grinder with 36-grit fiber disc (that I assume has some give), I may find that it may not sand as aggressive as I originally thought -- I thought it was being used like it had a metal cutting wheel; that's why I said it might sand too aggressive; I didn't know that I can put a fiber disc on it. This sounds good. I already has an angle grinder, I just need to get the 36-grit fiber disc to find out if it is the right tool. Thanks for the info. I appreciate that. Jay Chan Jim Conlin wrote: The sanding discs for that tool are of middling light paper(D or E wt.) and available from maybe 60 grit up. The pad is a firm sponge. The #60 will take forever to shape a bevel and the sharp edge of a glass skin will tear up the paper and the pad. Use as fine a grit as you like on the minigrinder and be careful.. It doesn't need to be pretty. You'll be adding glass back into the bevels. You will need the RO sander, but not for this. wrote in message oups.com... Please explain the reason why you think the 7424 random-orbit sander is not a good tool for beveling a tapered edge along the edge of a fiberglass skin. I am not questioning you; I know that you must have a lot of experience about this. I am asking this just trying to figure out which features of a sander that work for beveling and which don't. I already have a low cost angle-grinder. But I have a feeling that it is a bit aggressive for fiberglass skin. People who have the right touch probably can use it just fine. I probably will do more damage than good using it. Therefore, I am looking for a sander that comes with a pad. Jay Chan Jim Conlin wrote: The Porter-Cable 7224 looks like a Porter-Cable 7336 with a different pad. Same amps, same rpm's. That series (733x) comes with both 5" and 6" pads, both PSA and Hook&loop. I have both and use the 6" more in my work. YMMV. There's a counterweight that's calibrated to the weight of the pad, so you'll have to change that, too. As useful as thePorter-Cable random-orbit sander is, it's probably not going to be effective at grinding teh bevel in your glass deck skins. For that job, a low-cost choice would be a 4-1/2" mini-grinder such as the Porter-Cable #7430 with a #36 disc. Wear protective gear. You will want the R-O sander for cleaning up your skins and for subsequent finishing. wrote in message oups.com... I am interested in a Porter-Cable random orbital 6" polisher 7424 (6 speeds). By switching the 6" backing pad with a 13700 5" sanding pad, I can convert it into a 5" random orbital sander. By the look of its picture with the sanding pad, it surely looks just like any other angle sander. I am wondering whether I can use it to sand down a fiberglass skin to taper its edge. Any idea? Let me explain what I am trying to use the sander for: I am going to lift the fiberglass skin of a deck, and then replace the core material. After this, I need to put the fiberglass skin back in place, and I am supposed to use fiberglass cloth and epoxy to bridge the cut on the fiberglass skin. I need to sand and taper the two edges along the cut in order to level the patch with the rest of the fiberglass skin, and that is what I intend to use the sander for. Of course, I also want to use it as a random orbital polisher. I just want to know if I can also use it as a sander in the way that I have described above. Thanks in advance for any info. Jay Chan |
#10
posted to rec.boats.building
|
|||
|
|||
Can I Use Porter-Cable Random Orbital Polisher As a Sander?
I tried using a polisher with rubbing compound ... it didn't last long.
The heavier 2 speed works, and works, and works. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|