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Author Topic: Suction Stick Plans  (Read 20374 times)

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Offline shiver

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Suction Stick Plans
« on: February 22, 2007, 08:22:02 PM »
Suction Stick Construction
   
P.V.C. FITTINGS
a. 1-3/4” Male Plug
b. 1-1” Female Plug
c. 1-3/4” Male Slip to ½” Female Slip
d. 1-1” Male Thread to 1” Female Slip
e. 2-1” Female Slip to 1” Female Slip
f. 3-1” Female Slip to 1” Female Thread
g. 1-11/4”O.D to 1” I.D. x 1/8” Thick “O” Ring (Rubber)
h. 1-Small Can of Good Quality P.V.C. Glue

PLEASE READ ALL INSTRUCTIONS BEFORE STARTING PROJECT.

Not all P.V.C. Pipe will work together. Check for smooth inner & outer wall construction. This type is preferred. Also make sure the one-inch tube slides easily into the one & one quarter inch tube. All brands of P.V.C. will not work.

Any length of suction tube may be made, however, always cut the plunger 2” longer than the tube body. Also remember that the longer the tubes are the harder it is to operate.

Please dry fit all fittings & combinations before gluing. Some sanding may be required to produce a good fit.

The first piece made will be the connection of a 11/2” piece of 1” P.V.C. slipped into the 1” female slip to 1”male thread (d).

After you have decided how long to make your suction tube and you have this first piece made, it is time to fit it to the outer tube. You’ll notice how sloppy the fit is when dry fitting this piece to the outer tube. I suggest you make two (2) or more coatings of glue both inside & outside and let dry before fitting again. When it is ready the fitting will not slide freely into the tube. After the next gluing secure this first piece into the tube and apply pressure to bottom out piece (d) to the outer tube. Stand the tube on end to dry.

Next make sure your plunger (1”PVC) is at least 2” longer than the outer body (do not include piece (d) when cutting plunger to length). Now take fitting (b) and cap one end of the plunger. On the opposite end you’ll need to cut a ring around the end at least 1/8” wide approximately 3/32” deep (into the plunger) ¼”away from the end. You may need to dress this groove with sandpaper so the “O” ring (g) fits securely into the outer body. When this is established as a good airtight fit and still slide up & down inside the outer body, you can plug this same end with fitting (a).

This fitting was the hardest for me to make. It needed a lot of sanding before it would wedge into the plunger, and it never went in all the way. But don’t let this worry you as long as it gets started well. Now the plunger is complete, let’s get back to the outer body as long as the glue is dry.

You’ll want to ream out the open end of the 1 ¼”PVC to give the inside diameter a 1/8” bevel or chamfer. This is to allow an easy entrance for the plunger. Make sure your outer body is clean & smooth inside (use an aerosol break cleaner with a cleaning patch and ramrod or drag line). After it dries, use a Teflon lubricant to insure your “O” ring (g) slides unobstructed but still retains an airtight fit. You will also need to drill a ¼” hole 5” from the beveled end of outer body. This will allow you to release the negative pressure after the “O” ring (g) passes it so you don’t have to pull the plunger out each time you want the material to fall out of the suction tube. However, we all will pull out the plunger while getting used to the pull.

This is a good time to draw rings around your plunger to warn you that you are getting close to releasing your material. Pull the plunger out until you can barely see the black “O” ring (g) in the ¼” hole 5” from the end. Make your first circle on the plunger just behind the end of the outer body then another 1” closer to plunger handle (b) then another 1” closer to the plunger handle (b) so now you have at least 3(three) lines visible before you lose your negative pressure.


NOZZLES:

Cut:
1 piece of ½” PVC 7” long
1 piece of ¾” PVC 7” long
1 piece of 1” PVC 7”long

BUILD:

1- Take 1 (f) insert 1 (e) insert (c) insert ½”pvc x 7”

2- Take 1 (f) insert 1 (e) insert ¾” PVC x 7”

3- Take 1 (f) insert 1” PVC x 7”

When you screw any of these nozzles onto your suction stick don’t over tighten.

½” nozzle for sand
1” nozzle for gravel
¾” nozzle for combination.

Offline deserdog

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Re: Suction Stick Plans
« Reply #1 on: January 26, 2008, 11:49:40 PM »
These plans are ok, but here are several changes that make it easier and a better hand dredge.
#1. Don't try to file the 3/4 inch plug to fit into the 1 inch pipe. Heat it carefully until it is pliable and then just tap it into the end of the pipe.
#2. Don't try to make the 1 inch adapator fit into the 1 1/4 pipe by applying multible layers of glue. This makes for a bad joint. To do it the right way, heat the end of the 1 1/4 pipe carefully until slightly pliable. Then insert a 1inch piece of pipe and squeeze the 1 1/4 pipe with a damp cloth while turning the 1 1/4  pipe. this will shrink down the 1 1/4 pipe to fit the 1 inch pipe.
#3. Instead of just filing the top of the 1 1/4 pipe for a flare, again heat the pipe, and the insert anything funnel shaped to make the flare.
#4. After drilling the 1/4 inch vent hole, make sure to bevel the indise of the hole. this removes the sharp edge. Otherwise, the hole can take a chunk out of the o-ring.
#5. Don't draw the circles. Cut a shallow ring, and then color it in. This way, it will not wear off.
#6. Instead of a  straight handle, make a 90 degree handle. this is much more comfortable to use as your writst is straight when you use it.

I have learned these tricks from making over 1600 hand dredges.
Cannot find if you do not look!

Offline shiver

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Re: Suction Stick Plans
« Reply #2 on: January 27, 2008, 12:33:05 PM »
Excellent Changes deserdog!!!! {cool^sign}

Your experience is greatly appreciated,  thanks for sharing

Shiver

Offline Ghoti

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Re: Suction Stick Plans
« Reply #3 on: May 19, 2008, 08:35:37 AM »
Anyone made these and how much did you end up spending on it? How well is it working for you?

Offline bcdigger

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Re: Suction Stick Plans
« Reply #4 on: May 21, 2008, 03:20:10 PM »
I can't see  it costing more than $20-$25 for materials. If you haven't already, check out Fissureman's video here Crevice sucker DIY video
You'll always wonder unless you dig it

VikingSniper

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Re: Suction Stick Plans
« Reply #5 on: June 02, 2008, 06:00:52 PM »
Suction stick plans



Offline Seeker

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Re: Suction Stick Plans
« Reply #6 on: June 03, 2008, 03:05:29 PM »
VS, Those plans give me some more options for when I tackle my Suction Stick!!!.. Thanks!!

Offline klamp

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Re: Suction Stick Plans
« Reply #7 on: July 05, 2008, 05:22:57 PM »
video gone from youTube

VikingSniper

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Re: Suction Stick Plans
« Reply #8 on: August 03, 2008, 10:08:12 PM »

Offline goldfreak

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Re: Suction Stick Plans
« Reply #9 on: October 22, 2008, 11:24:21 PM »
What is the best material for making a plunger?