Having trouble with your Festool power tool? Well, we're here to help you. Before posting to the forum, give us a chance to diagnose and resolve your issue. In the U.S. and Canada, call us toll-free at 888-337-8600 on Monday-Friday between 8a-5p EST or contact us via email at service@festoolusa.com. For other countries, please visit http://www.festool.com for contact information for your local Festool service department.

Author Topic: Rotex 150 unsure if operating properly  (Read 403 times)

0 Members and 1 Guest are viewing this topic.

Offline matsukaze

  • Posts: 5
Rotex 150 unsure if operating properly
« on: October 31, 2019, 09:36 PM »
hi guys I have a rotex 150 Works amazing as a grinder. But unsure if the random orbit is functioning properly.
On my brushless 125 the disc rotates as it sands. Actually hard to stop it.... unsure if I have had.
But the rotex does not rotate very consistant ly. On high speed (6) with higher grits 180,220, it will rotate with the orbit if you use the lightest of pressure. But say 60 grit on 1 or 2 speed, Does not spin. Honestly not seeing it perform as a finish sander very well at all.
 I am hoping it may be defective. As I want  it to perform.  Can any one tell me how theirs operates? Or if mine sounds out of wack?
Many thanks.
Correy

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline Gregor

  • Posts: 1471
Re: Rotex 150 unsure if operating properly
« Reply #1 on: October 31, 2019, 10:32 PM »
In fine sanding mode the pad is able to turn freely (rotation isn't prevented) but it shouldn't spin but more turn and the rotation shouldn't be excessive.

Increased pressure likely increases what you experience - but the Rotex 150 IMHO dosn't need pressure as the weight of the machine is enough (at least in my experience). Don't try to push it, just guide it - took me a while to figure that out. I now have one hand on the front knob to guide it, the other at the very back just to support it to keep the pad from tilting.

Also: Dust collection could be a factor, have you tried to vary (meaning reduce) the suction? Or to turn the speed down just slightly, stopping it from possibly hitting a resonance frequency?

Finally: As "Three tools in one for coarse sanding, fine sanding, and polishing " it's not a specialized finish sander.
But in my experience close enough most of the time.

Offline matsukaze

  • Posts: 5
Re: Rotex 150 unsure if operating properly
« Reply #2 on: November 01, 2019, 12:28 AM »
 Hi Thanks Gregor,  Yes you describe it the same as mine. Just a bit perplexed as the 125 sander ETC(?) ( sorry not in the shop right now) has a very positive rotation as well as eccentric orbit. Isn't this the essence of Random Orbit? I lower the vac  power when sanding too.
It seems to finish fine enough.  I do not think the 5mm eccentric is good for clear coat, The finish with the 125/3( or probably any x/3) is much nicer. As should be.
Just gets me it does not have a positive rotation. Design flaw?
We're debating if we should keep it. I might go 150/3 as we don't "grind" much. and our surfacer leaves pretty spectacular finish. Usually just start at 220 most of the time.
 Anyone else see it weird it doesn't spin?

Offline Gregor

  • Posts: 1471
Re: Rotex 150 unsure if operating properly
« Reply #3 on: November 01, 2019, 07:39 AM »
Forgotten to add this, a nice video about the topic:


Offline Mike Goetzke

  • Posts: 394
Re: Rotex 150 unsure if operating properly
« Reply #4 on: November 01, 2019, 08:51 AM »
Hi Thanks Gregor,  Yes you describe it the same as mine. Just a bit perplexed as the 125 sander ETC(?) ( sorry not in the shop right now) has a very positive rotation as well as eccentric orbit. Isn't this the essence of Random Orbit? I lower the vac  power when sanding too.
It seems to finish fine enough.  I do not think the 5mm eccentric is good for clear coat, The finish with the 125/3( or probably any x/3) is much nicer. As should be.
Just gets me it does not have a positive rotation. Design flaw?
We're debating if we should keep it. I might go 150/3 as we don't "grind" much. and our surfacer leaves pretty spectacular finish. Usually just start at 220 most of the time.
 Anyone else see it weird it doesn't spin?

Maybe more experienced can speak up but don't think it's normal for your ETC to spin continuously.