36mm hose on Rotex 125 ?

[JSands]

How to fit the 36mm hose on RO 125?  I see no adapter on Festool web site?    

When sanding flat surfaces, where the 100% of the sanding area makes contact with the wood, the 36mm hose would serve no benefit, as the sander has too much suction.  However,  I often find myself sanding small trim pieces, where less than half the sanding pad makes contact with the wood at any given time, in which case, the dust collection is not very great...no fault of Festool.    Dust is all over.  The wider diam. hose will allow additional suction in the holes not making contact with the wood, which will reduce the amount of dust. 

 

[BobKovacs]

I think the big question would be "why"?  The Festool sanders get exceptional dust collection with the 27mm hose, so why would you want to dealmwith the bigger, more cumbersome hose?

 

[JSands]

Does a better job.... I compare the 27 and 36mm with the TS75, 36 is much better.... same will be true with the RO125.... the 27mm is not bad, but I own the 36mm and prefer to use it...

 

[peter halle]

Respectfully I disagree.  You do not need the 36 mm hose on a sander.  The sander vs the TS75 produces different waste at far different rates.  In fact, you need to turn the suction down for the best results on many / most of the sanders with the smallest hose to prevent extra scratches.

Now if you only have the 36 mm hose, then I would understand the request.

I hope that this did not come across as harsh.

Peter

 

[Corwin]

Sounds like you want the Dave Ronyak adapter:  CT Hoses

Bob Marino has offered these -- see:  Shop Vac to Festool Hose

Yet, I do agree with what Peter has posted above... 

 

[tbellemare]

First, you're going to want to dial down the suction on the CT when using a 27mm hose with a 125mm pad so increasing the hose size doesn't add value to the suction capabilities.

Second, it's unwieldy in comparison so it would just make sanding more difficult.

Tom

 

[monte]

hmmm, I Respectfully agree as well with Tom, Bob & Peter,,,,,,

I have both versions of the Rotex's (soon to add a third!) as well as the rest of the sander lineup, as well as all various lengths of the 27mm, 36mm & 50mm hoses and I only use the 27mm hose with the sanders.

 

[fdengel]

I believe it is by design that the 27mm hose is the only one that fits on the sanders.

 

[tbellemare]

I may have misunderstood Mr. Sands and if I did, I apologize.

Some people have 36mm hoses right up to their sanding stations - think, boom arm. For them, I make a Dave Ronyak inspired whip end with ~2' of 27mm hose and two 27mm tool ends. It slips in the 36mm tool end, attaches to the sander dust ports, and provides flexibility at the tool.

Tom

 

[Dan Clermont]

The extra airflow in the larger hose will suck the sander down onto the surface possibly causing swirl marks. Even with the 27mm hose you will need to lower the suction so the sander floats above the workpiece

The 36mm hose is designed for larger tools like the Kapex, Plunge Cuts saws, Planers and Routers

Dan Clermont

 

[JSands]

Thx for responses guys, I have modified my original post, so the thread archives better,
it now better explains the situations in which a wider hose benefits the Rotex...

 

[fdengel]

Hmm, I'd also noticed that dust extraction is less effective with smaller pieces like that, but hadn't even considered that a larger hose might help with that situation...

I'm still not 100% convinced that it would, since the adaptor is basically going to be reducing the hose diameter by the time it hits the sander anyway, but I guess it could still make some small difference.

Enough to be worthwhile?  And even if it did, would it really help with those narrow pieces?

If so, I might become interested in trying that too...

[scratch chin]

 

[JSands]

A restriction is not ideal, but it will not reduce airflow to that of a 27mm hose... less friction in the hose length is more significant.  Just put your hand over the end of 27mm hose and 36mm hose... most people are confused by air speed vs. total air movement... in this case, the added CFM will help,  FPM not as significant... 

Anyway, I use those sanding grippers pads (3ft long) to lay small trim pieces on, holds them still, and enables quick sanding with minimal handling... the dust is all over the the gripper pads... any added suction will help, specially if you already own the larger hose.    If I did this more often, I would sand over dust box hooked up to my cyclone... till then, I think added CFM might do the trick...as usual, buy n try!  The Festool mantra! 

Oh btw, not everyone is as dust conscious as I am, so this is not a big issue for many.  I try to be as safe as possible as I can get nasal irritation if I breathe too much dust, and hate wearing dust mask if I can avoid it.    As good as the Festool dust collection is on their sanders (better than any on the market), even when sanding flat panels, a dust meter reads under 5 micron particle count increases 5x at face distance when sanding...  I bet that is still 95% or better dust collection.  With these small pieces,  10x increase in dust level at face distance...     

 

[nehardwoodfloors]

Respectfully I disagree.  You do not need the 36 mm hose on a sander.  The sander vs the TS75 produces different waste at far different rates.  In fact, you need to turn the suction down for the best results on many / most of the sanders with the smallest hose to prevent extra scratches.

Now if you only have the 36 mm hose, then I would understand the request.

I hope that this did not come across as harsh.

Peter

I agree, 27 and turn down the DC!
But our machines all use 36 so instead of dragging around the 27 I got the adapter.
I got the Fein multistep. Not a perfect fit but with a little cramming it will all go together.

 

[tbellemare]

I agree completely that the 36mm hose produces far more airflow than the 27mm hose. I agree so much that about a year ago, I did a short video using the Turbo Suction Brush to demonstrate the difference.

TurboSB.avi

I still think the whip adapter would give you as much airflow as any other adapter plus you get the utility of the short whip for ease of sanding.

The 27mm rubber end goes over the sander dust port so the main dust port of the sander is restricting airflow more than the whip hose.

Tom

 

[JSands]

Glad someone supported me

 

[nehardwoodfloors]

I don't think anyone would disagree about the larger diameter hose having better suction.

What everyone is saying is that the ro125 only needs about 1/4 of the ct26 power to do it's job. We all have noticed that too much suction actually slows down the sanders cut rate and leaves unsightly identifiable scratchs on the wood.

I agree about the length having a big influence on the suction power.
We have many machines that simply outdrew the vacs so we are always testing different hose diameters and lengths.

Short and fat is where it's at!  [cool]

 

[Alan m]

the way i see this is use the 36mm hose and 27mm adapter hose whip tale thing on site and the 27mm hose full in the shop along  with the 36 mm hose on a booom arm. this is what i do . this cuts down on stuff to bring with you.  i put the non as hose( gray one) and the whip tail in a sys 3 that stays on top of the vac

 

[JSands]

>  What everyone is saying is that the ro125 only needs about 1/4 of the ct26 power to do it's job. We all have noticed that too much suction actually slows down the sanders cut rate and leaves unsightly identifiable scratchs on the wood.

                  Yep, and I agree with everyone, - when sanding flat surfaces.  As mentioned above, in the modified OP, when sanding 1.5" strips, a bulk of the pad is NOT on the wood, so you NEVER have the "suction problem", but you do have a dust problem, as the dust is all over the table.... more CFM will help in "this particular situation"....  otherwise,  for flat sanding, 27mm + Rotex simply rocks...  its possible you did not read my revised Original Post, so the situation was clear when archived.... cause ya know someone else will stumble across the same thing..