ETS 125 EQ Bounces

[sw1211]

Seems the most important thing is that his problem was solved.  Does it really matter who told who or who gets "credit?"  It's all about knowledge sharing and it continues to be one of the big benefits of the FOG.

 

[justinmcf]

i have had festool es150 sanders for 10 years, and ets150 sanders for 1 year, i have never experienced "bounce".
can anyone tell me if they have experienced this with their ets150 sander or is this only an issue with the smaller ets 125 models?

regards, justin.

 

[Brice Burrell]

i have had festool es150 sanders for 10 years, and ets150 sanders for 1 year, i have never experienced "bounce".
can anyone tell me if they have experienced this with their ets150 sander or is this only an issue with the smaller ets 125 models?

regards, justin.

Justin, this is more prevalent in the smaller sanders, ETS125, RTS400 and the DTS400. While the 150 mm sanders do benefit from break in they tend to preform better before the break in than the smaller sanders. 

Seems the most important thing is that his problem was solved.  Does it really matter who told who or who gets "credit?"  It's all about knowledge sharing and it continues to be one of the big benefits of the FOG.

Steve, I meant my comment about credit jokingly (that's why I added the smiley) and as I said, the real credit doesn't go to me but to our man at Festool, David. I hope I didn't offend anyone, if so I apologize.

 

[bill-e]

It could be a bad pad.  I'd give Festool a call about a warranty repair/replacement if it's done this from the start.  The ETS was redesigned from the ES to give it better balance so it should not be be an issue that you cant take of with suction.

Here's a vid I did a couple of years ago which demonstrates the "bouncing" or "chattering" of the ES-125 and how suction resolves it.

http://nhwoodworker.com/temp/stickingsander.wmv

 

[woodguy7]

Don't mean to veer of the subject to much, but yesterday i was using my 18month old rotex 150 in course mode sanding some oak & the thing was jumping all over the place, quite violently at times. Never noticed it doing it quite as bad as that before. Think i might go & check the pad in case it is split.

BTW, i used it last week for the first time to polish my car with the new 9000 compound, "wow"  Superb  ;D

 

[Dave Ronyak]

Here's one more thought / input on the case of the "jumping sander."  Does your sander jump or bounce always on all areas of all work pieces, or is the bouncing problem more severe in certain areas of certain projects?  I ask because I have found that sometimes "bouncing" or "scooting" (I define "scooting" as the tendency of the sander to want to pull itself in a particular direction relative to the workpiece on certain areas of a workpiece) or other issues causing difficulty with control of the sander (which may be an ETS or a Rotex) are location specific, e.g. one portion of the frame of a cabinet door.  When this occurs, I find repositioning the workpiece relative to the support (e.g. MFT table top) and especially the clamps can make a huge difference.  I have often found that "bouncing" or "scooting" is more likely to occur when the workpiece is held to the MFT top using Festool's Clamping Elements and less likely to occur if an F-style clamp (FSZ Quick Clamp or Screw Clamp) is used to hold the workpiece firmly against the supporting table top.

Dave R.

 

[andrew dalisa]

Does anyone have issues with this sander bouncing?  It seems no matter what combination of speeds I use with the sander and the CT33 I get almost constant bounce from this tool.  Can anyone suggest a fix for this?  The sander is about 1-year old but only has about 1-hour of total run time on it (because of the bounce).

Had my Rotex 125 for several months.  It often bounces around and appears to be related to how well I keep the entire pad in contact with the wood surface and the amount of pressure I am applying.  Heard that running the sander for many hours in Rotex mode can stop the bouncing. Does this help?  Why would it work?

 

[peter halle]

Does anyone have issues with this sander bouncing?  It seems no matter what combination of speeds I use with the sander and the CT33 I get almost constant bounce from this tool.  Can anyone suggest a fix for this?  The sander is about 1-year old but only has about 1-hour of total run time on it (because of the bounce).

Had my Rotex 125 for several months.  It often bounces around and appears to be related to how well I keep the entire pad in contact with the wood surface and the amount of pressure I am applying.  Heard that running the sander for many hours in Rotex mode can stop the bouncing. Does this help?  Why would it work?

At one time there was a feeling that running the sander to break in the brushes was a good thing.  That is not the common thought now.

Using the Rotex in the aggressive mode certainly has learning curves.  How the pad sits on the work, the volume of vacuum from the dust collector, the hills and valleys and grain of the workpiece can all come into play.  And each workpiece is different.

Experience is the best teacher in my opinion.

Peter