Author Topic: VacSys under $100  (Read 6363 times)

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Offline afish

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Re: VacSys under $100
« Reply #30 on: February 18, 2021, 06:59 AM »
Yes, it's just a cheap deal.  I've a huge 50-75 gallon compressor in the garage which I ran 3/4" Copper in the garage to cool the air as I plan to spray at some point.  I have enough Copper to run a line back into the house and downstairs but that would be pressure rather than vacuum.  I also have a smaller tubular compressor I haul around whenever I use my air nailers ... perhaps that could be modified which could make for a neat experiment.

Why would you need to cycle the compressor unless the pressure leaks?  Couldn't it be setup to auto turn on like it does normally when pressure gets low?

Sorry, I missed this.  My compressor/vacuum pump is set to auto turn on/off just like a compressor does.  It kicks on when the vacuum reaches approx. 21" of mercury and turns back off at 24" but that's adjustable.  It works just like a regular compressor does.  I made it like that so it wouldn't run constantly like the festool unit and I wouldnt need to baby sit it. Since once its done the compressor will be relocated to another building. The vacuum doesnt need require big hose or tubing I just use 1/4 pneumatic tube its small, flexible, easy to route, and cheap.  Plus the push to connect fitting work good with it and makes adding, splicing very easy.

 You will always use/lose some vacuum.  When clamping with the 8" pod it looks like I use about 1/8 or little more inch of mercury each time I remove a part and re-clamp.  when you release the part any vacuum in the line between the switch/valve and pod is exhausted.  The first vale I bought didnt exhaust the air so when I toggled the switch the part stayed stuck until it naturally lost enough vacuum and I could pull it off.  This took awhile.  Now the second you flip the valve the part releases instantly. Also with vacuum bagging you will never have 100% seal.  This way I could just turn on the pump and walk away when the bag starts loosing pressure the pump kicks on 21" is more than enough for any vacuum pressing.  According to what I read at 20" is about 10psi so for every square foot of surface area that equals 1440# pounds of pressure, vacuum is amazingly strong.  As I mentioned I can pick up the entire bench compressor and all by the part, its way more force than what's required for cabinet building.  The pump cycling can be mitigated with extra vacuum reserve it would just depend on how long you need to have your parts in a bag and how good your bag is sealed or how many parts you need to clamp a day.  The little 4 gallon compressor I have works good but if I did it again I would probably just add more reserve and trigger it manually if needed.  I use a little 3 channel RF remote from HD to turn on/off certain items.  Channel 3 will be for the vacuum, as long as you have a guage you could cycle it manually when low. The more reserve you have the less you will need to, obviously. When I get more time I will see how many times I can re-clamp a part before my pump cycles just using the clamp. I do plan to add a second pod for long stuff since when you have a long part clamped the ends get saggy and floppy. Having two in some T-track so you can slide them back and forth for longer panels will work well.  However I prefer the clamp on top of my bench as it adds some additional height and is at a more comfortable working height when edge banding.   

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Offline rwnath

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Re: VacSys under $100
« Reply #31 on: February 18, 2021, 10:47 AM »
Any chance of some plans or build pictures being included?

Offline afish

  • Posts: 1332
Re: VacSys under $100
« Reply #32 on: February 18, 2021, 04:11 PM »
Once I get everything sorted out.  I made a few more today slightly different to see if I prefer them another way.  If I offer anything I would probably offer them as a kit.  I would just run the cnc profiles and send the raw parts along with hardware list.  The buyer would clean up the parts and assemble.  Its easy to assemble but its hard to sell woodworking projects to woodworkers.  So I know better than try.  The cnc parts are small so they are easy to ship in a flat rate box from USPS. Everything else is easily purchased at Mcmaster carr or HD

Offline afish

  • Posts: 1332
Re: VacSys under $100
« Reply #33 on: February 18, 2021, 04:15 PM »
Any chance of some plans or build pictures being included?

Not sure if you mean for the compressor/vacuum or the vacuum clamp.  If you are talking clamp see other post above.  If you need help with the compressor you can start on joe woodworker or youtube.  Its very easy if you want a manual unit if you want it to auto cycle then Joe woodworker is the source for those parts and some good info.

Offline Goldserve

  • Posts: 44
Re: VacSys under $100
« Reply #34 on: February 18, 2021, 04:29 PM »
Can you make a more detailed post on what it can do, like swivel, rotate, etc? I'd be interested in buying a kit! Sign me up!

Offline afish

  • Posts: 1332
Re: VacSys under $100
« Reply #35 on: February 18, 2021, 05:01 PM »
Yes when I have some more time I will try and do a video showing more details its still a work in progress. While it works great and is 90% there  Im still working on some details and trying to come up with a way to engineer it to fit as many end users as possible. 

Just to be clear yes the pod can rotate almost 180° the only thing that prevents a full 180 tilt would be the 1/4" vacuum hose, but once you have a part clamped it would be impossible to tilt anything 180 anyways so its made like that to be fully ambidextrous and not limit anyone from using it any which way.  The top spins 360° it can a actually spin endlessly.  The pods can be simply pulled out and swapped like the vac-sys

Just out of curiosity for those with the Festool vac sys what is your main use for it? edge-banding? Thats really my only use for this thing. I struggle to see myself using it for much else but WOW for applying and trimming edgebanding its a game changer. I would like to hear from others what they use theirs for. 

One of the updates I made today was to add 2 holes @ 96mm in the mounting plate for Parf anchor dogs.  This way I can just set it on top of the MFT cart and it would plug into mft holes. This way it wont move around since I prefer to use it on top of the bench but I know some others will prefer it side mounted.

The other thing Im struggling with is the detents.  I prefer them at 90° I dont have or see a need for them every 30° it actually causes me more trouble since I only use the 90° when there are more you end up fiddling with the plunger more.  Which is why I asked about how others use theirs.  I may be overlooking something.  For myself Im just making them at 90° but then there might be others that think they want or need more adjustment.

 

Offline Jack01

  • Posts: 50
Re: VacSys under $100
« Reply #36 on: June 04, 2022, 11:39 PM »
Afish

This is great.

Can you share list of parts, used to build this.

Thanks

Offline Bob D.

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Re: VacSys under $100
« Reply #37 on: June 05, 2022, 07:01 AM »
"Just out of curiosity for those with the Festool vac sys what is your main use for it? edge-banding? Thats really my only use for this thing. I struggle to see myself using it for much else but WOW for applying and trimming edgebanding its a game changer. I would like to hear from others what they use theirs for. "

I would think sanding would be one use for it. The entire surface is free from edge to edge. And all the edges are free just as they are for edge banding. So you could round over an edge or sand with no interference and quickly move from one piece to the next with no clamps to fuss with.

Carving might be another use. I think that would benefit from a ball and socket style mount between the pod and the base.

I think I mentioned this in another thread about vacuum systems but you can get a fairly inexpensive 45 liter/min vacuum pump for less than $250.

I have a smaller one made by LabFish which is only 10L/min and it works, but I should have gone for their 30L/minute version.

I went looking this morning for the LabFish 30L/min version and it is still available and less than $300.

I bought my 10L version back in Jan 2021 for less than $120.

They claim -0.085 MPa for the 30L model.

https://www.amazon.com/Portable-Diaphragm-Positive-Negative-Pressure/dp/B09K79P7Q2

30L/min is not a huge volume and compared to the venturi vacuum systems which I don't
know how much volume they generate. But the LabFish is >50 dB for the 30L version and
designed to run all day so I think something like this could work for vacuum bags too because
there once you draw the bag volume down you're moving very little volume, just need to
overcome in-leakage.
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It's a table saw, do you know where your fingers are?

Offline AofD

  • Posts: 72
Re: VacSys under $100
« Reply #38 on: July 16, 2022, 12:00 PM »
Thanks all for sharing your ideas!
TS55REQ, CT26, MFT/3, OF1400, ETS150/3, KAPEX120, T18, Centrotec Installer Set, Domino 500, SysLite and RO90

Offline jasen

  • Posts: 57
Re: VacSys under $100
« Reply #39 on: July 17, 2022, 03:16 AM »
I'm in the process of building this one:



Cheap plans and well detailed for the actual pods

Offline Doug H

  • Posts: 42
Re: VacSys under $100
« Reply #40 on: July 17, 2022, 09:54 PM »
That is a fun project.  I modified the plans a bit for mine.  The pads and pump fit in a sys-2. Here are a few photos.









Offline Doug H

  • Posts: 42
Re: VacSys under $100
« Reply #41 on: July 17, 2022, 10:10 PM »
I also had some left over tubing so I made a saw rest for my TS-55.







Offline afish

  • Posts: 1332
Re: VacSys under $100
« Reply #42 on: July 18, 2022, 06:31 AM »
Nice work, but I think that valve might cause you some issues.  Isn't your part staying stuck once you release it with the lever?  If your working with some very porous material it probably isn't an issue.  However, if you try with something like melamine, laminate, or sealed wood its probably going to stay stuck for a bit until enough air bleeds out that you can remove your part.  If you are able to remove your part straight away using that valve then you have a significant leak somewhere in the system.   

Offline Bob D.

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Re: VacSys under $100
« Reply #43 on: July 18, 2022, 06:49 AM »
That valve looks to me like it has a common port that would be connected to the pod, a port that would be vented to atmosphere, and the third port would be connected to the vacuum pump. So when you operate the valve the vacuum is removed and the pod is vented so vacuum is released from the pod and workpiece.
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It's a table saw, do you know where your fingers are?

Offline Doug H

  • Posts: 42
Re: VacSys under $100
« Reply #44 on: July 18, 2022, 08:05 AM »
Exactly. One lever direction applies vacuum to the pod.  The other direction vents the pod to atmosphere.