HL 850 Chip Extraction with 27 mm Hose

[Corwin]

Wow!  That video really illustrates your point.  Hmmm, if a picture is worth a thousand words, what must a video be worth? 

 

[jmbfestool]

BILLIONS! Ofcorse!

The only thing I can think of to solve it is to have the large hose I think. It only happens with plywood by the way as far as I know.

JMB

 

[woodguy7]

Redwood has the same effect.  I now use the 36mm hose with the Hl850

Woodguy

 

[jmbfestool]

Thought you would come up with something really intelligent to say woodguy [wink]

 

[woodguy7]

Thought i would state the obviously  [tongue]

I once blocked the 27mm hose & it took ages to get the darn thing cleared, learnt my lesson  [smile]

Woodguy

 

[-woodsman-]

Wow! [eek]  That is the EHL 65, not to be a jerk I thought we wher talking about the HL 850 with a 27 mm hose fitting.  The 850 has a larger chamber in frount of the hose port.  This would give the fibres more room to fall into place before entering the hose.  Does this happen to everyone with the 65?  It seems the the elbow also gives things more time, by slowing them down,  to bunch up before hitting the rim of the hose.  Can anyone testify to using a 36 mm hose on the EHL 65?  Testify! [not worthy]  Testify! I cant belive I just said that.  I bet the EHL 65 would be improved by the 36-27 mm reducer.  I'm still wondering about the HL 850.  I like the vid.  Thats a hard balancing act.  It looked like there might have been a video that didn't make the cut.  Its amazing how fast and clean (clean meaning the cut not the hose packed with fibbers) these things cut.  I have a co worker who has a 65 Ill ask his opinion on it.  I do get a little bit of dust with my 850 connected to the 37 mm hose.  Its minimal.  Maby it cant be improved on but I'd still like to see what happens with the 27 mm downsizer.

 

[waynelang2001]

I have the 65 and i had this happen a few times, best thing i could add would be to slow down the cut abit to let less through the hose. That works pretty well for me. But im sure a bigger hose would be the way to go.

 

[jmbfestool]

Wow! [eek]  That is the EHL 65, not to be a jerk I thought we wher talking about the HL 850 with a 27 mm hose fitting.  The 850 has a larger chamber in frount of the hose port.  This would give the fibres more room to fall into place before entering the hose.  Does this happen to everyone with the 65?  It seems the the elbow also gives things more time, by slowing them down,  to bunch up before hitting the rim of the hose.  Can anyone testify to using a 36 mm hose on the EHL 65?  Testify! [not worthy]  Testify! I cant belive I just said that.  I bet the EHL 65 would be improved by the 36-27 mm reducer.  I'm still wondering about the HL 850.  I like the vid.  Thats a hard balancing act.  It looked like there might have been a video that didn't make the cut.  Its amazing how fast and clean (clean meaning the cut not the hose packed with fibbers) these things cut.  I have a co worker who has a 65 Ill ask his opinion on it.  I do get a little bit of dust with my 850 connected to the 37 mm hose.  Its minimal.  Maby it cant be improved on but I'd still like to see what happens with the 27 mm downsizer.

I did mention above that is was the EHL 65  I said I cant believe how the HL850 can work with a 27mm hose because the EHL65 struggles so the HL85 would be worse. Thats why we got onto this part of the topic.

Yes I made 3 videos

the first one I dropped the hose as I pulled it out so I didnt want to use that video
second video it was all bit well just crap really lol
3rd time lucky! The thing every time the planer blocked up it made a mess so was more mess for me to tidy up which sucked!

Well noticed any way! Apart from not noticing we where talking about the EHL 65  [poke]

JMB

 

[jmbfestool]

I have the 65 and i had this happen a few times, best thing i could add would be to slow down the cut abit to let less through the hose. That works pretty well for me. But im sure a bigger hose would be the way to go.

Yes I agree if planning the full width of the planer slowing down and and maybe reducing the cutting depth a bit reduces the chances with plywood but it does keeps on happening really and woodguy mentioned Redwood but I havent planed redwood so I dont know my self. Other materials I havent really had problems width apart from if you have it on full 4mm depth and go really fast on softwood I have had it spit the wood out and clog the planner not the hose.

I think having a bigger hose will help but using a reducer will cause the same problem again because I have tried planning slowly on ply and it still happens so to me its not the fact its not sucking it away quick enough its the rubber end of the hose has enough grip to hold the fibres on the end and then like mentioned above starts to build up and creates a pyramid.  I think the hose has to go around the exit port on the EHL 65 instead of going inside this will solve the problem.

JMB

 

[-woodsman-]

I cant see how at 27mm hose works on the HL 850 because the 27mm hose struggles with my EHL65  when I am planning Plywood face.

I havent ever used my HL850 on the 27mm cus of the reason it doesnt fit. I do need to get a 36mm hose though.

Ill do a video showing what happens to mine

JMB

Boy is my face red.  I think my point about the larger chamber and the increase of speed due to the reducer still holds merit.  I could be rong and it wouldn't be the first time.  If I can go from a little dust to no dust it's worth the time fiddling with it.  If otropo  Would be willing to send me one I can put it to work right away. [poke]
Sorry I was going off of the thread title and had a few beers with a friend.  weekend multi tasking!

 

[jmbfestool]

Well when I eventually get the large hose ill do a test. I hope your rite and it solves it with a reducer.

JMB

 

[egapeg]

"It seems the the elbow also gives things more time, by slowing them down,  to bunch up before hitting the rim of the hose. "

I think that part of the problem is the elbow is causing the particles to all be hitting the lip of the hose at the same place, they then have to rebound off of the lip before getting sucked in, but before that happens another chip hits it back onto the lip.

IMO the hose should have a sharpish edge at the largest diameter which then tapers to the inside.
-
Just a thought here - try cutting a piece of plastic - Credit Card thickness so that it is a snug fit inside the hose accross the diameter. Let it stick out a bit so that it more or less fits insde the elbow to where the bend is. Give it a kink towards the planer so that the plastic keeps the chips from hitting the rim and acts like a funnel.

 

[Deansocial]

well my ehl65 blocks all the time with a 27mm hose to the point where i would rather hoover up when im done than mess around unblocking it. but i do have the 36mm hose and have never blocked it even at full speed set to 4mm

 

[jmbfestool]

"It seems the the elbow also gives things more time, by slowing them down,  to bunch up before hitting the rim of the hose. "

I think that part of the problem is the elbow is causing the particles to all be hitting the lip of the hose at the same place, they then have to rebound off of the lip before getting sucked in, but before that happens another chip hits it back onto the lip.

IMO the hose should have a sharpish edge at the largest diameter which then tapers to the inside.
-
Just a thought here - try cutting a piece of plastic - Credit Card thickness so that it is a snug fit inside the hose accross the diameter. Let it stick out a bit so that it more or less fits insde the elbow to where the bend is. Give it a kink towards the planer so that the plastic keeps the chips from hitting the rim and acts like a funnel.

I agree with you der and it what I thought was happening also being rubber doesnt help its has abit more grip in wood than just plastic. Also plywood planes like little sticks so it also just needs a couple to just bridge part of the hole not the full diamiter but just near the edge you know what i mean. Well any way you would of thought festool would of done something by now. I never noticed the problem before because I was working on site alot and dust extraction wasnt a main concern by any one.

JMB

 

[Deansocial]

i always thought an adapter that goes over the outlet like the 36mm hose then into the 27mm hose so there is no ledge for chip to stick on

 

[Corwin]

i always thought an adapter that goes over the outlet like the 36mm hose then into the 27mm hose so there is no ledge for chip to stick on

You can easily make such an adapter.  All you need is a short length of D36 hose and two of the D36 Tool End Fittings and simply install these fittings on either end of the length of D36 hose.  The tool end of your D27 hose will fit into the end of this adapter.  This is the same type setup as the Dave Ronyak adapter, except it is stepping up in size rather than stepping down.  Since a length of D36 hose is rather costly for the short length needed, you might try asking your dealer if they could make one up for you as some dealers here now do for the Dave Ronyak adapter.

This will illustrate what I am talking about: Link to Post with Picture of Dave Ronyak Adapter

 

[Deansocial]

i always thought an adapter that goes over the outlet like the 36mm hose then into the 27mm hose so there is no ledge for chip to stick on

You can easily make such an adapter.  All you need is a short length of D36 hose and two of the D36 Tool End Fittings and simply install these fittings on either end of the length of D36 hose.  The tool end of your D27 hose will fit into the end of this adapter.  This is the same type setup as the Dave Ronyak adapter, except it is stepping up in size rather than stepping down.  Since a length of D36 hose is rather costly for the short length needed, you might try asking your dealer if they could make one up for you as some dealers here now do for the Dave Ronyak adapter.

This will illustrate what I am talking about: Link to Post with Picture of Dave Ronyak Adapter

think you misunderstood.

When using a 27mm hose it fits inside the tool outlet thus creating a ledge for stuff to gather on were with the 36mm hose this isnt the case(on the ehl65 at least)

if there was something that went over the tool part but slid inside the 27mm hose there would be no ledges

 

[Corwin]

i always thought an adapter that goes over the outlet like the 36mm hose then into the 27mm hose so there is no ledge for chip to stick on

You can easily make such an adapter.  All you need is a short length of D36 hose and two of the D36 Tool End Fittings and simply install these fittings on either end of the length of D36 hose.  The tool end of your D27 hose will fit into the end of this adapter.  This is the same type setup as the Dave Ronyak adapter, except it is stepping up in size rather than stepping down.  Since a length of D36 hose is rather costly for the short length needed, you might try asking your dealer if they could make one up for you as some dealers here now do for the Dave Ronyak adapter.

This will illustrate what I am talking about: Link to Post with Picture of Dave Ronyak Adapter

think you misunderstood.

When using a 27mm hose it fits inside the tool outlet thus creating a ledge for stuff to gather on were with the 36mm hose this isnt the case(on the ehl65 at least)

if there was something that went over the tool part but slid inside the 27mm hose there would be no ledges

Uhm, no, I understood that just fine.  Personally, I think just using the larger D36-AS hose is the solution.  But, as I had described earlier, you can make an adapter that is essentially a D36 hose at the tool, but upstream has a another tool-end fitting that will connect into your D27 hose.  This adapter would fit over the planer's dust port, thus not creating that dreaded ledge at that location.  There might be a slight ledge upstream where the D27 tool end fits into the adapter, but this will be a much smaller ledge and should prove far less problematic than the ledge you currently have at the tool. 

The Hose Reducer is not an option to connect a D36 adapter to your D27 hose since its small end will not fit inside the D27 tool-end fitting.  You could replace the D27 tool end fitting with the rotating connector and, with a rotating connector on the D36 adapter, connect the two with a hose connector -- that would eliminate any ledge where an adapter joins the D27 hose.  So, wouldn't this all be much, much simpler to just upgrade to a D36-AS hose for the planer?

 

[Deansocial]

i have a 36mm hose, it was just an option for those that dont