Hard vs Soft Delta pads for Rotex RO90

jnug

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Feb 26, 2015
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Perhaps guys that have used an Rotex RO90 can help me with this question.

One thing about a tool that offers so much functionality in one package is that it will always do some things better than others. None of the multifunctional tools do everything equally well. The dif IMO in Festool's case is the things their multifunctional tools do well, they do at a ridiculously high level of performance and the things they don't do as well are still done at a pretty high level.

So there are several pad types offered for this sander, in keeping with the spirit of its multifunctional profile. Gonna' do a bunch of different things, it stands to reason that there will be a multiplicity of accessories to support them. the delta sanding pads for it come in either hard or soft with soft considered the standard as is the case with the round pads.

However where there is a distinction worth exploring a bit is that while you can see several uses for the soft round pad, the hard round pad's basic function is to give the paper a hard enough backing to allow it to perform better when you truly need to get something flat or to maintain a crisp edge between two perpendicular surfaces. I could see jobs where you would not only be working your way up through grits but where you might go from soft to hard pad somewhere along the way as well.

In the case of the delta though, I am more inclined to think that you would be tasking the sander in such a way that would more often make the hard pad the choice. I ask because I think I better get a set of hard delta pads for this sander right from the start presuming I am understanding the tool correctly as I don't think I am likely to find the soft delta appropriate too often.

Does that make sense?

You get one soft delta pad when you buy the sander and then the extra pads come in sets of two soft or two hard. I am thinking that I will not likely use the soft delta that comes with the sander that often but might use the hard delta pads enough that having two of those would be worthwhile.

Also do folks find the interface pad useful? I know it is prone to damage as it is a bit fragile. But if it offers enough of a dif when compared to the soft round pad, then maybe it is worth having. Can folks describe how the round interface pad fits into the whole picture?
 
I never use the soft delta pad on the RO90 or the DX93, always the hard pad. I use the delta pad almost exclusively for paint removal, never for finishing. It's just too small to do serious finishing work, while it works great for removing paint out of corners.

I find the hard pad too soft actually. It is not as hard as the hard pads for the Rotex sanders. It wears way too fast for my taste.
 
Maybe its a good thing you get two of them in a pack!

Thanks for answering. I kinda' thought that made sense. Almost makes you wish they made the hard the standard for the delta.

The bigger rotex sanders don't have a delta mode right. So it would be tough to compare them that way right?

or are you saying that the hard round pads for the 90 are not as robust has the hard round pads for a 125 or a 150?
 
Just saying that the material of which the so called "hard" 90x90 mm delta pad is made is no where near as hard as the material of which the round hard pads of all 3 Rotex sanders are made.

A hard delta pad for my DX93 or Ro90 generally lasts only a month, perhaps 2, while the hard pad on my Ro150 is 4 years old, and I use it a lot more. 
 
Wow that is a big dif. Although everybody says the action of the delta mode though acting a bit like a random orbital really is only acting like it. Maybe it would be expected to wear faster. But one per month on a pad you can rotate to get more life from it...that is a bit of a surprise. You must be using the heck out of that thing.
 
I think it has also to do with the shape, the point. The point makes it a lot more fragile than a round pad and this way it is easy to put a lot of force on a small area. I paint a lot, and when I remove paint, I do tend to put quite some force on my sanders to work as fast as possible. I'm definitely not one of the "grab it by the end and let it float over the surface guys".
 
I'm with Alex. I just use it to get the paint out of corners. I mostly use 40, 60, and 80. When the tips get torn up I turn them. I'll only use the delta head out to where the round head will fit and use the random orbit from there.

I can't help but mention that delta head cuts super fast so be careful.  [scared]
 
Regarding the interface pad, I found it very useful and not that exensive to buy. Came in very handy whilst sanding bull nose.
 
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