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WILL1E
Moderator
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# Posted: 9 May 2022 13:01
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So i want to attempt the sand point again this spring before the ground dries up. If you recall last year i tried the gas powered post pounder with no luck. So instead of renting a trailered post pounding rig, i'm thinking of making something.
I have an earthquake power auger and i noticed they along with harbor freight make a 2" auger for it. The round output shaft on the auger is 7/8" diameter. So i was thinking of getting some 1" square steel tube with 7/8" inside for extensions..maybe 5 or 6' long. I would get some 7/8" square tube to make adapters that would slip inside the larger tube. I would pin each section with the bolt or clip.
The soil by me is mostly sand, so i should be able to drill a couple feet, lift out the drill to empty the sand and repeat until i'm at depth.
Thoughts, opinions, other ideas?
Just thought the minimal investment in materials and making use of my auger head would be more worthwhile then renting a rig. That way if i need to install another sandpoint or the neighbors want to use it, i have something useful to offer!
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Nate R
Member
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# Posted: 9 May 2022 14:24
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No input other than it sure looks like the Harbor Freight one has a more robust tip than the Earthquake brand....and in my area, there's a layer of gravel-y stuff around 25 feet down....might want something a little sharper/pointier like the Harbor Freight one to get through it. Not sure if your area has that same kind of layer...
And, if it works, I might want to rent the setup from you eventually! 
-Nate
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WILL1E
Moderator
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# Posted: 9 May 2022 14:37
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Quoting: Nate R And, if it works, I might want to rent the setup from you eventually
For sure!
Found a rig that's almost identical to what i'm thinking, minus the fact i wasn't going to build the cart portion.
https://www.google.com/shopping/product/1?q=well+drill+extensions&prds=epd:1622089808 5143392088,eto:16220898085143392088_0,pid:16220898085143392088&sa=X&ved=0ahUKEwi2hMPU _9L3AhVGk4kEHaWtANcQ9pwGCA4#sgro=om
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NorthRick
Member
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# Posted: 9 May 2022 17:55
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The problem with sand is that it tends to just fall out of an auger tip like the one shown in your link.
The other problem with sand is the borehole tends to collapse into itself.
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Brettny
Member
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# Posted: 9 May 2022 20:01
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Why cant you drive a point through sand?
Since you alreaty have an auger why cant you just suspend it from something like a tree and use some type of arm off it to stop it from spinning?
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gcrank1
Member
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# Posted: 9 May 2022 21:23
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My driven well took a bend off to the sw at about 20'....I can look down the pipe and see...pipe. Not being straight-ish it limits what I can put in it.
Your idea of making a hole as far as possible might prevent that and give you a pre-drill to do a final driven point?
I think Id like a bigger pipe but that gets expensive (But what isnt expensive these days  )
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neb
Member
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# Posted: 16 Jul 2022 11:12
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Quoting: WILL1E So i want to attempt the sand point again this spring before the ground dries up. If you recall last year i tried the gas powered post pounder with no luck. So instead of renting a trailered post pounding rig, i'm thinking of making something. I have an earthquake power auger and i noticed they along with harbor freight make a 2" auger for it. The round output shaft on the auger is 7/8" diameter. So i was thinking of getting some 1" square steel tube with 7/8" inside for extensions..maybe 5 or 6' long. I would get some 7/8" square tube to make adapters that would slip inside the larger tube. I would pin each section with the bolt or clip. The soil by me is mostly sand, so i should be able to drill a couple feet, lift out the drill to empty the sand and repeat until i'm at depth. Thoughts, opinions, other ideas? Just thought the minimal investment in materials and making use of my auger head would be more worthwhile then renting a rig. That way if i need to install another sandpoint or the neighbors want to use it, i have something useful to offer!
I was just wondering how you did on the well, a follow up on a great topic.
I made an auger type and drilled my own well by hand also. In fact I did two of them. Hit water about that 15 to 16 feet mark but went down about 19 to 20 feet.
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gcrank1
Member
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# Posted: 16 Jul 2022 20:43 - Edited by: gcrank1
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I may be all wet here.....
But since the limit for a shallow well pump is 25', and the volume of the water is dependent on the pipe dia. and depth, Id be thinking as big a pipe dia. as you can stand, to about 30' min.? even if you hit water at that 15ish'. The drop tube cant just sit at the static water level but needs to be down below it enough to not run the well-pipe dry and the recovery time within the pipe has to make up the volume taken in a reasonable time.
Am I right to think that the shallow well limit of 25' means that if that is my static water level a shallow well pump wont work because once it draws that pipe down it is below the 25'?
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neb
Member
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# Posted: 16 Jul 2022 23:09
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[quote=gcrank1]Am I right to think that the shallow well limit of 25' means that if that is my static water level a shallow well pump wont work because once it draws that pipe down it is below the 25'?
Oh, I think you are right. Any way that is my understanding of what I have read and what people in the business have said.
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Brettny
Member
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# Posted: 17 Jul 2022 07:03
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Have you tried pumping water down your casing and pushing/twisting it down?
I dont see how an electric jack hammer didnt work in sand.
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oire
Member
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# Posted: 19 Jul 2022 07:28
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I am considering a sandpoint also. I like your idea of using the square tubing.
More research for me.
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aaronswenson
Member
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# Posted: 21 Jul 2022 10:59
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Has anyone tried a sand point in rocky ground?
Any advice? I'll be using a post pounder on a skid steer.
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Brettny
Member
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# Posted: 21 Jul 2022 11:14
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You will prob break off the sand point or the pipe useing a big machine like that.
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