Author Topic: Dust collection for those with boom arm accessory  (Read 988 times)

0 Members and 1 Guest are viewing this topic.

Offline Naildrivingman

  • Posts: 362
Dust collection for those with boom arm accessory
« on: August 11, 2017, 09:14 PM »
I was just fiddling around and realized that the "fat" hose (50mm I believe) can be adapted to 27mm thus improving the suction for stationary tools like Kapex. I suppose one could use it for other tools as well, but the range of motion will be diminished. My adaptor consists of two Bosch parts that I married together. The large end is hard plastic that is 50mm to 36mm and the other part is typical rubber that is 36mm to 27mm. I haven't tried it yet, but I have to believe the collection with be better.  By how much I don't know.
Dance with who brung ya...

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 Bohdan

  • Posts: 796
Re: Dust collection for those with boom arm accessory
« Reply #1 on: August 11, 2017, 09:23 PM »
Necking a 50mm hose down to 27mm is a real obstruction to the air flow possible even though it will still be better than a straight 27mm hose.

I turned down a PVC plumbing fitting to be able to connect the vac end of a 50mm hose over the outside of the kapex fitting and it really 'sucks'.    [smile] [big grin]

Offline Naildrivingman

  • Posts: 362
Re: Dust collection for those with boom arm accessory
« Reply #2 on: August 11, 2017, 09:56 PM »
Necking a 50mm hose down to 27mm is a real obstruction to the air flow possible even though it will still be better than a straight 27mm hose.

I turned down a PVC plumbing fitting to be able to connect the vac end of a 50mm hose over the outside of the kapex fitting and it really 'sucks'.    [smile] [big grin]
So, what's the difference between necking the 50mm to 27mm over 1.5m (my adaptor) vs necking the 50mm to 27mm over 5m (boom arm)?
Dance with who brung ya...

Offline Bohdan

  • Posts: 796
Re: Dust collection for those with boom arm accessory
« Reply #3 on: August 11, 2017, 10:04 PM »
I would expect probably very little difference as the major restriction would be the 27mm hose end.

Offline grbmds

  • Posts: 1732
Re: Dust collection for those with boom arm accessory
« Reply #4 on: August 11, 2017, 10:48 PM »
Necking a 50mm hose down to 27mm is a real obstruction to the air flow possible even though it will still be better than a straight 27mm hose.

I turned down a PVC plumbing fitting to be able to connect the vac end of a 50mm hose over the outside of the kapex fitting and it really 'sucks'.    [smile] [big grin]
So, what's the difference between necking the 50mm to 27mm over 1.5m (my adaptor) vs necking the 50mm to 27mm over 5m (boom arm)?

Originally I used the 36mm/50mm combo with the boom arm but now use the Festool 27mm covered hose with the 50mm on the boom arm. I have plenty of suction with most tools. However, the suction is still better using my first combo (36/50mm) for the TS55. I suspect that you would need at least a 36mm (rather than 27mm) hose for the Kapex.

I think you know this based on your post, but you don't need to rig anything up to connect either 27mm or 36mm hose to the 50mm. There is a Festool collar which does this. (I couldn't tell whether you were using Bosch parts because you didn't know or for another reason.)
Randy

Offline Naildrivingman

  • Posts: 362
Re: Dust collection for those with boom arm accessory
« Reply #5 on: August 12, 2017, 06:47 AM »
Necking a 50mm hose down to 27mm is a real obstruction to the air flow possible even though it will still be better than a straight 27mm hose.

I turned down a PVC plumbing fitting to be able to connect the vac end of a 50mm hose over the outside of the kapex fitting and it really 'sucks'.    [smile] [big grin]
So, what's the difference between necking the 50mm to 27mm over 1.5m (my adaptor) vs necking the 50mm to 27mm over 5m (boom arm)?

Originally I used the 36mm/50mm combo with the boom arm but now use the Festool 27mm covered hose with the 50mm on the boom arm. I have plenty of suction with most tools. However, the suction is still better using my first combo (36/50mm) for the TS55. I suspect that you would need at least a 36mm (rather than 27mm) hose for the Kapex.

I think you know this based on your post, but you don't need to rig anything up to connect either 27mm or 36mm hose to the 50mm. There is a Festool collar which does this. (I couldn't tell whether you were using Bosch parts because you didn't know or for another reason.)
I'm not connecting 27mm hose to the 50mm.  I necked down the 50mm, so essentially I have a 1.5m x 50mm hose with a 27mm tool end. I also have the Bob Marino 36mm dedicated Kapex 1.5m hose. That hose definitely works better than my original 3.5m x 27mm and my 1.5m x 50mm>3.5m x 36mm boom arm assembly. I posted because the Marino hose worked better at straight 36mm, wouldn't it stand to reason that a 50mm hose would work even better still?

After all, if less is more, think how much more more would be?
Dance with who brung ya...

Offline Poindexter

  • Posts: 143
Re: Dust collection for those with boom arm accessory
« Reply #6 on: August 12, 2017, 07:39 AM »
I run the 27/50mm route and have to turn the suction down to nearly nothing when sanding.  Sometimes I forget to turn the suction back up on other jobs.  When burying the TS75 it still collects most of the dust even at half suction.  Not once have I thought "gee, I wish I bought a fatter hose."