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Forum topic by joejinky posted 08-05-2021 02:11 PM 737 views 0 times favorited 32 replies Add to Favorites Watch
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joejinky

26 posts in 2263 days


08-05-2021 02:11 PM

Topic tags/keywords: panel saw rotating saw tablesaw

I have the main components for a panel saw. It is the big one, with 110” of slide.

One of my winter projects will be to finally build this saw. I’ve had the components for about seven years now. It will not be a traditional panel saw. I plan to use a vacuum table setup for the material. So one OR TWO sheets of plywood (8’x8’) would rest against a perforated backing and be held in place by the suction.

The saw will be vertical in my shop. It will be able to cut vertically or horizontally like the saws at the big box stores. But it will also rotate to a horizontal saw as well, for when I want to stack several sheets and make one cut.

I want to try something really crazy! I want the saw on a rotating turret, so the material will remain in place and the saw will rotate around it to cut through the material in ANY direction.

I also have the router sled for the saw.

So much to do. So little time left!

Joe

-- I must be doing something right. I still have all of my fingers!


32 replies so far

View pottz's profile

pottz

20049 posts in 2196 days


#1 posted 08-05-2021 02:32 PM

cant wait to see it done.sounds like your using this for your business ?

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

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Woodnmetal

116 posts in 57 days


#2 posted 08-05-2021 02:48 PM

So one OR TWO sheets of plywood (8×8 ) would rest against a perforated backing and be held in place by the suction.

The saw will be vertical in my shop. It will be able to cut vertically or horizontally like the saws at the big box stores. But it will also rotate to a horizontal saw as well, for when I want to stack several sheets and make one cut.

I want to try something really crazy! I want the saw on a rotating turret, so the material will remain in place and the saw will rotate around it to cut through the material in ANY direction.

I also have the router sled for the saw.

So much to do. So little time left!

Joe

———————————————————————————————————————————————————————————————————

Joe,

When you say, 1-2 pieces of 8X8 Ply, held in place by suction, that will rotate on a turret to cut in any direction is starting to scare me lol.
Sounds like you need to do a few more calculations. CFM comes to mind… well that’s the easiest one haha.

Good luck, keep us posted, I will follow your thread here.

Gary & Christine

-- I haven't changed... but I know I'm not the same.

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joejinky

26 posts in 2263 days


#3 posted 08-05-2021 02:55 PM


cant wait to see it done. sounds like your using this for your business ?

- pottz

From your mouth to God’s ear!

No … well … I DO have a “business” in that I have a sole proprietorship called A Guy In Town but while I was once quite active with it, a couple of gut punches slowed me down, and I am just now trying to motivate myself get get back into the race.

I am retired, and have two of what I call ”home hobby workshops.” One is for metal, the other for wood and plastic, etc. I have tools and machines. So many so, that my neighbor walked into my woodshop one day and said, ”Will you ADOPT me?

I have some tools and things that normal hobby workshops do not have, such as a forklift and a rotary screw air compressor (soooo nice, and quiet!) They are the BEST two things I have purchased, after the CNC tables. Then there is a myriad of other tools and such.

There are a few things missing … a wee home in the village … a fair maiden half my age … a pot of gold …

Joe

-- I must be doing something right. I still have all of my fingers!

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joejinky

26 posts in 2263 days


#4 posted 08-05-2021 03:19 PM


When you say, 1-2 pieces of 8X8 Ply, held in place by suction, that will rotate on a turret to cut in any direction is starting to scare me lol.
Sounds like you need to do a few more calculations. CFM comes to mind… well that s the easiest one haha.

Good luck, keep us posted, I will follow your thread here.

Gary & Christine

- Woodnmetal

With the table in the horizontal position, and the correct bed to lay the plywood upon, it doesn’t require much suction to hold the pieces in place.

CNC router tables work with a vacuum setup, and believe it or not, they simply lay 3/4” particle board on the table, and mill off the factory exterior surfaces which have a sealer that prevents air passage through the board. Once that layer (1/16”) is removed from each side, the entire board allows air to be sucked through it. So a table with a flat particle board surface is all that is required to hold down material for CNC routing. you seal off the area around the material using sheets of paper or ???

Pounds per square inch … SCIENCE! A 4×8 sheet of plywood is 4,608 square inches. At -15 atmospheric pressure, the sheet is being held down with 69,120 pounds of force! Sounds weird, eh? Even the larger HFT vacuum pumps are strong enough to accomplish this. YES, if a corner of the plywood is lifted, the vacuum is lost or weakened, and there is a chance of the material moving. This is how that vacuum on the TV commercial lifted a 16 lb. bowling ball. No great feat. a 6” diameter funnel over the ball with a good seal on a domed surface is lifting about 30 square inches of surface, at -15 lb./sq.i. so it is easy to understand how the bowling ball is lifted, with only 1/2 lb. of actual force of gravity fighting the suction of the vacuum at 15 lb. of lift/sq. in.

This is how factories pick up ’YUGE sheets of heavy steel and things, with a series of suction pods and a simple -17 atmospheric pressure pump.

http://youtu.be/gYWSNIRkLZQ

Did you know you can have a home elevator run by a simple shop vac?

http://youtu.be/48TBZDDkaO0

Joe

-- I must be doing something right. I still have all of my fingers!

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joejinky

26 posts in 2263 days


#5 posted 08-05-2021 03:25 PM

If you don’t need the expensive acrylic windows, you CAN actually build that round lift in your home, using plywood, door skins, some sealer, and a Home Depot shop vac! It is BEYOND simple to make.

Joe

-- I must be doing something right. I still have all of my fingers!

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Woodnmetal

116 posts in 57 days


#6 posted 08-05-2021 03:46 PM

Hey Joe,
I do know,
Pneumatics have been making huge strides for many years now.
I have designed/programmed several automated air circuitry boards/machines. Several being, OEM brake line forming machines years ago. Robotic arm to place the flare nuts at the ends etc.
I’m very familiar with vacuum suction. Both our shop laser and plasma have the ability to lift sheet metal up to 3/8 thickness much larger than 8X8.
I’m looking forward to following along.. Like I mentioned the CFM calculation is the easiest 1 .

Cheers!
Gary

-- I haven't changed... but I know I'm not the same.

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joejinky

26 posts in 2263 days


#7 posted 08-05-2021 04:09 PM

I wish I could clone myself. I have so many projects on the drawing board, and only one old dude (me) to do them.

Joe

-- I must be doing something right. I still have all of my fingers!

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joejinky

26 posts in 2263 days


#8 posted 08-05-2021 04:44 PM


I m very familiar with vacuum suction. Both our shop laser and plasma have the ability to lift sheet metal up to 3/8 thickness much larger than 8X8.
I m looking forward to following along.. Like I mentioned the CFM calculation is the easiest 1 .

Cheers!
Gary

- Woodnmetal

I don’t know … I am just a simple guy with a McGyver spirit, I guess.

I think you can answer this … Is it possible to build a simple home elevator out of a rectangular “car” with seals at the top and bottom that rides in a square shaft? It would seem that the design would be quite simple. All that would be required are exit doors that can be sealed and handle both positive and negative air pressure without fail.

Basically, it would be a ‘YUGE version of the tube carriers at drive-up teller windows. But my idea would be far more simple, as there are no curves involved, and there is only ONE vertical path the car must follow.

So you open the sealed door at the bottom, walk into the car and close the shaft door. the car is now in a sealed shaft. Press a button and the vac comes on. The car is lifted by vacuum to the next floor. A switch detects the car slightly above the floor level and begins to bleed the vacuum above the car after tip out locks beneath the car are deployed, creating a landing area. When the car settles, you open the door on that floor and exit.

To go down, you close the door and press the button to activate the vac. The car is lifted to the sensing switch, and the landing pod retracts. Then the car is “lowered” via a bleed valve that reduces the lifting capacity of the vacuum. There are a dozen ways to prevent the car from a free fall. Think of the mechanism that locks when you pull out your seatbelt too quickly. That could be ONE safety device above the car.

Even if the vac failed, the car would drop as the air pressure beneath the car increases, and the car would settle gently at the bottom as the air bleeds out.

Am I wrong about this?

Joe

-- I must be doing something right. I still have all of my fingers!

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joejinky

26 posts in 2263 days


#9 posted 08-05-2021 04:49 PM

I m looking forward to following along.
Cheers!
Gary

- Woodnmetal

Well, this will probably be a WINTER project. But I have so many other things on the front burners.

(Cue George Burns, singing ”I Wish I Was18 Again!”)

Joe

-- I must be doing something right. I still have all of my fingers!

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Woodnmetal

116 posts in 57 days


#10 posted 08-05-2021 07:30 PM

Am I wrong about this?

Joe

———————————————

I do know this…. since the major blackout in August of 2003. The wife and I don’t go into elevators, we just take the ramps or stairs .

-- I haven't changed... but I know I'm not the same.

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joejinky

26 posts in 2263 days


#11 posted 08-05-2021 09:33 PM

I do know this…. since the major blackout in August of 2003. The wife and I don t go into elevators, we just take the ramps or stairs .

- Woodnmetal

I am with you there. I recently checked into a hotel in Virginia. They had TWO elevators. My room was on the FIFTH floor, and I had 200 pounds of luggage. I take a lot of computer equipment and tools with me, and when the hotel is in a bad area, I take everything out of the truck.

so during my stay, ONE elevator went OUT OF SERVICE. Okay … The next day, I returned from the day’s work to find BOTH elevators OUT OF SERVICE!

I was tired, and sore, and I was NOT about to make six trips up five flights of stairs with all of that stuff.

“Can I move to a room on the ground floor?” (Silly me!) NOPE!

So I reached behind the paper OUT OF SERVICE sign and pressed the button. The elevator made some noises, but it came to the ground floor and opened the door.

I stepped in carefully, and then brought all of the luggage into the car. I pressed 5 and the door closed as I said a short prayer.

Well, that elevator car SHOT up to the fifth floor and then stopped suddenly, launching me into the ceiling. My luggage got 18” of air! Thankfully the door opened and I got to my room.

So I called the desk the next morning and told them that if the elevators were still not working, I would be checking out EARLY! They assured me that they had worked on them “all night” and they were fine and in working order.

Okay … back into the elevator for a nice ride to the ground level. When I returned that night, I passed the “Elevator Room.” Dear God Almighty! All of the cabinets were open, and they had wires, and jumpers, and extension cables running from the laundry room to make it work! There were oscillating fans blowing on the components to keep them cool. I reached for my phone camera, but an employee SEATED at the door opening said, “No photos PLEASE!”

I remained for three more days without any further issues, but those elevators SCARED me!

Joe

-- I must be doing something right. I still have all of my fingers!

View Ocelot's profile

Ocelot

3341 posts in 3850 days


#12 posted 08-05-2021 09:38 PM

Joe, you could have sent your luggage up the lift and ran up the stairs to meet it. :-)

-- I intended to be a woodworker, but turned into a tool and lumber collector.

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joejinky

26 posts in 2263 days


#13 posted 08-05-2021 09:46 PM


Joe, you could have sent your luggage up the lift and ran up the stairs to meet it. :-)

- Ocelot

Ha! I am 63, and 290 lb. with high blood pressure and arthritis in both knees. I DID think about that, but like
I said, it was in a bad neighborhood, even though it was a nicer hotel. By the time I got up there, the car might have been emptied by other “guests.” Some of the stuff could be replaced, but the bag with the cash and the checks, and the credit cards, and two PCs … and the laptop … and the monitors … and the luggage with the Bullpup shotgun and the ammo …

Joe

-- I must be doing something right. I still have all of my fingers!

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Woodnmetal

116 posts in 57 days


#14 posted 08-05-2021 10:48 PM

Some of the stuff could be replaced, but the bag with the cash and the checks, and the credit cards, and two PCs … and the laptop … and the monitors … and the luggage with the Bullpup shotgun and the ammo …

Joe
———————————————————

Hey Joe,
Where you goin’ with that gun….. Jimi H

-- I haven't changed... but I know I'm not the same.

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joejinky

26 posts in 2263 days


#15 posted 08-05-2021 11:40 PM

When I travel, I carry a few guns with me. No, I am not “afraid” of anything. but one never knows when one will turn a corner and find himself smack dab in the middle of a BLM or Antifa riot, or whatever. I also know that staying in a hotel is NOT safe.

Short example:

You check into room 214 at the local motel. There YOU are, sleeping soundly, when “Bubba” kicks in your door! He is drunk, and on drugs, and he has a machete in his hand! He yells, ”I’ll teach you to %$^& my wife!”

Now, you don’t even KNOW his wife Thelma, but earlier that evening, Bubba found out his wife was having an affair with a secret lover. After he beat her half to death, she cried, ”He is at the motel, in room 214!!!

Lover boy did not bother to tell Thelma that he was going to check out this morning. She still thinks he is in 214, and YOU were the lucky b%^$%#d who checked into that room this afternoon.

So ask yourself, ”Do I really believe that Bubba will sit down with me to have a rational conversation about how I am not the man he wants to kill?” Bubba doesn’t know what the guy looks like. Bubba doesn’t even know his name. All BUBBA knows is that he came to KILL the man in 214.

THAT is why I carry guns with me!

Joe

-- I must be doing something right. I still have all of my fingers!

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