Sand Castle Push Rod

Hello Heidi

What is a sand castle push rods

Are you talking about cold forming machining or an injection die

what is the application and what are you pushing?

Anthony@alno

Would picture of failed push rod be helpful? The same goes for a picture of all the parts that make up the sand castle? The same goes for a picture of a very simple sand mold that has already been made by someone else? Less fuss. The same goes for a castle that I am imitating? Used drafting materials. Is there a compromise between a simple and a more elaborate sand castle? Imagination comes into the picture. I do not want to spend any money on all this. Just a hobby and a an inquiry. What material could be used for rod & plate. Natually that goes for the various molds. The plate goes to the top of mold, the rod is part of the assembly and it protrudes thru a small hole at the roof of the mold. The mold is turned upside down and the push rod is pushed down, the mold is gently push upward, thus leaving a wet sand form of a cylinder, rectangle, wall, and whatever. (the Big Game, the Bears are now on the board, exciting game) The less parts, the better. And would not like the prospect of losing push rods, parts in sand. The simple sand castle mold has better strength. Mine would have to have strength also. Send to a friend Digg this Add to del.icio.us

Maybe a stainless steel rod would be the best.

Is there any danger for kids?

OK Heidi I've been watching this question since some time now To others, he never listens, yep he is a bloke.(_{note suction sound})

You are getting nowhere. My wife's name is Heidi so that is possibly keeping me at a not angry level. (^{whats the score?})

What do you need a push rod for? Since thousands of years the gravity of the wet sand has forced the dropping of the moulded sand. Why would you want to go through the trouble and push something that will fall anyway?

I just don't get it!

I am sorry. I will try to do better.

Maybe you are right about not using a push rod. It was never my idea anyway. I just sent the person I asked for molds a drawing done on a drafting board. He sent back the molds with the push rods. I just went ahead and used them. They broke, so be it.

So be it

What is the significance of "missing vote"? I always mark "add vote" when I vote on my own remarks and I don't ever think it requires a "off topic". I always get a "missing vote" reply from CR4?

Like this:

The radio buttons are the two little circles next to "Off-Topic" and "Good Answer" on the left hand side. You have to "choose" one of them before clicking "Add Vote".

I've replied using Firefox:- which is I believe is readily available for Macs.

Would picture of failed push rod be helpful? The same goes for a picture of all the parts that make up the sand castle? The same goes for a picture of a very simple sand mold that has already been made by someone else? Less fuss. The same goes for a castle that I am imitating? Used drafting materials. Is there a compromise between a simple and a more elaborate sand castle? Imagination comes into the picture. I do not want to spend any money on all this. Just a hobby and a an inquiry. What material could be used for rod & plate. Natually that goes for the various molds. The plate goes to the top of mold, the rod is part of the assembly and it protrudes thru a small hole at the roof of the mold. The mold is turned upside down and the push rod is pushed down, the mold is gently push upward, thus leaving a wet sand form of a cylinder, rectangle, wall, and whatever. (the Big Game, the Bears are now on the board, exciting game) The less parts, the better. And would not like the prospect of losing push rods, parts in sand. The simple sand castle mold has better strength. Mine would have to have strength also. Send to a friend Digg this Add to del.icio.us. I have no knowledge of cold forming machining or injectiion dies but am willing to learn.

Let me read between the lines...

I think you mean Sand Casting of ......

in which case, you must calculate maximum stress on your push rod. (perhaps you mean connecting rod, which are commonly sand cast.)

at any rate, it is quite clear you are using the wrong words for what you mean.

sorry, but you should use pictures and get the right words.

respectfully,

chris

Wow Chris, you have ruined this post for me. I was lost in wild speculation about automated sand castles with draw bridges and working siege engines all made of compressed sand. Perhaps working trebuchet. I was hoping there was some competition out there that I had not heard of, in Finland perhaps, that was doing something incredibly cool. working push rods and GEARS! and little counterweights. . .

Now, alas, you suggest this is only another question posted by someone who has no idea what in God's creation they are talking about. Perhaps even another "Graduate Student" trying to answer someone else's homework question.

Wow, what a let-down.

Thanks Chris, Killjoy!

-A-

I am all for your coment for calculating maximum stress. Is this a chance to use intergal calculus?. I am fascinated about that subject. I took it in college but never had a chance to use it later. I guess one would have to know the volume of sand in the mold, its weight, the sand's density and other factors. There would be several volumes to work with. I am trying to learn how to send pictures to these forums. Probably tomorrow I will disconnect my i- mac and take it down to the store called "We Fix I-Macs". and see if they can put in Enternet Explorer. Fries might do it also. (Both are in Palo Alto, Calif.) I think the picture that I have with the taped up plastic rod shown with the mold for a wall might be good.

Darn. I just wrote out a message to you and accidently deleted it. The main items of interest of it were moments of inertia, mentioned in physics & math, a report written many years ago for a correspondence course on the construction of either the Golden Bridge wherein moments of inertia were required to be known for various parts of the bridge. Just as well they were deleted. Lots of rambling. The strength of the push rod would certainly depend on the mold's volume and density of the wet sand. Is there a formula? I mean a connecting rod. (in regard to your questioning. I mean rod connected to plate) I have a case number with Apple Tech Service for how I can install internet Explorer into my 10.4.11 i-Mac. It is necessary to do this in order to send pictures.

I am sure this message could be worded better. The first try was probably better.

I really have no idea what you are trying to build, nor does anyone here I think. You should get some help from a friend to write your posts.

Here are some downloadable books and documents that teach about sand casting and moulding.

http://www.4shared.com/document/oXqJ1KTh/Metal_Casting_a_Sand_Casting_M.html?cau2=401waitm
http://www.4shared.com/document/5GmDXdS2/Metal_Casting_a_Sand_Casting_M.htm
http://www.4shared.com/document/CeP1WOzh/Fundamentals_of_Die_Casting_De.htm
http://www.4shared.com/document/GMJAesLB/Metal_Casting_Design_Materials.htm
http://www.4shared.com/document/x6DqVrEy/Week_8-_Metal_Casting_-__Desig.htm
http://www.4shared.com/document/OuFmpNlU/CASTING_DESIGN_AS_INFLUENCED_B.htm
http://www.4shared.com/document/saQAAAbL/V1-3-7_connecting_rod.htm
http://www.4shared.com/document/OK7lhZvS/Casting_Defects_and_Design.htm

Chris

All of this is just about building a sand castle on the beach. A just plain small bucket would do the trick. But anyway, imagination enters into the picture. I am sure you are providing me with good information. Thank you.

Chris,

I think he just might actually be talking about building a "sand castle." I have re-read the the OPs and I think that may have been it all along. However, I am prepaired to be incredibly wrong. Again.

Sand Castle mold:

Also note: "lost" push rod and base plate.

If this ain't it, who knows?!

-A-

but why!!!???

nice picture.

I knew the gist of it. I'm still asking "But Why??"

Chris

Why don't you show us the pictures you talk about then we will know how to answer your questions?

Not sure how to send pictures & drawings. I can do it using e-mail, just one at a time. Using this forum thread I am not sure how this all works.

I am trying to download Explorer.

You obviously have a slow system/internet connection.

Once you have explorer running: try enigma from Sutton designs:-

http://www.suttondesigns.com/

It's not as fast as Chrome, but it is much faster than explorer and firefox. It's a fairly small download, but, I think it uses some of the software from explorer to work. It doesn't have all the bells and whistles of the bigger browsers but I've never found anything that I want to do that it doesn't work with.

I have gone down to Fries and "We fix Macs" and made initial inquires about my i-Mac. I think I have to install internet Explorer and I don't know if my i-mac can down load it. My i-mac is a 10.4.11. It is a little difficult to take care of these maters because there is so much other things going on.

I am trying to discover how to transfer pictures from my i-photo (parts of castle, drawing of what I really want using drafting methods, molds showing taped up rods & plates, the castle assembled more or less on the ironing board, etc. I hope people can be patient with my attempts to download what is required. I think (and my wife thinks too) that I need to stay away from this project until after Christmas. I hope that I can still be part of all this until after the holidaysl

Once in awhile I can't help to go back to this project. But I know that I would do better to wait

You have a problem and let me tell you, it is not in the engineering department.

With all due respect but getting a bit bored, Ky.

I need to know how to send pictures and drawing. I can send e-mails using i-photo showing one picture at a time. I have a scanner which can a drawing by e-mail. I am not sure how to send what would be helpfull using the Forum Thread. Someone else has sent me a picture so it must work both ways. I would like to be enlightened. This type problelm will probably come up quite a few times and I would like to get a hold on solving it. I am sure it is easy but I still have not caught on.

Check out this thread:

http://cr4.globalspec.com/thread/15743

http://cr4.globalspec.com/thread/15743

Just to be on the safe side

I will try to make a bookmark of this thread.

Incidentally, I have a i-mac 10.4.11. Here is something I sent someone else:

Join Date: Nov 2007 Location: Sherwood Park, Alberta, Canada Posts: 1112 Good Answers: 61	# 15 In reply to #14 Re: Sand Castle Push Rod 11/22/2010 4:36 PM
	Check out this thread: http://cr4.globalspec.com/thread/15743

correction: I have a scanner which can -scan- a drawing. The drawing can then be sent by e-mail.

Did you actually read any of the suggestions?

I give up. It reminds me of that pilot joke:

Tower to pilot: what is your position and height?

Pilot: I'm sitting in the front and I am 5'7"

We have a lot going on; I am sure everybody else has too around this time. So that is probably not a good excuse. Anyway I am sorry.

If I understand your problem correctly I might have a couple of suggestions. The problem is that I don't know what your problem is. I am a very constructive person and wish to help but need (as others) more information.

It seems to be more of a hobby problem that you have so all in its own time. When your ready Mate, don't rush into these things (after a long time on the case you would like to have an answer, I guess?)

What was the score?

I am having trouble installing internet Explorer which I would hope help me send pictures to people who want them. For example, a sand mold next to a taped up plastic rod and plate. Or perhaps, all the parts of my sand castle mold. Or perhaps, a very simple sand mold which was developed by someone else. I will perhaps take my computer down to Fries or "We fix Macs" and ask them about down loading internet Explorer. My computer is a i-mac 10.411. I am not about to spend money for a new computer.

The problem is to get a rod & plate to push sand out of mold in order to build a sand castle without breaking at the junction point of rod & plate. Need to know the best material, the friction, the volume of the mold, density and perhaps the moment of inertia (?) of the rod. I forgot the score in the Big Game but remember that Stanford won by a large margin.

I have the perfect solution to what I think is your problem. Unless you supply photos you will never know what I have in mind.

Please go and get some help from a "Dude", you know, the guys that do nothing else but instruct others how to operate these machines of what ever make.

I only started 5 years ago and am still on a steep learning curve.

Have a good one, Ky.

I am trying to download internet Explorer in my imac. It is a 10.4.11. Will probably try tomorrow to take my computer down to either Fries or "We fix Macs and see if they can help me send pictures. I find that it is hard to find time for all this.

GA! Now, please provide details of the tiny push-rods and gear mechanisms.

-A-

This morning I am going to try to get squared away with Apple Support in order to learn about downloading internet Explorer. If this can be done and I try to follow instructions perhaps I will be able to send pictures of my sand castle. These pictures could include the result of using a push-rod, now all taped up with tape, the various parts of the sandcastle molds. what is should look like, and a drawing using drafting techniques. Knowing that a small plastic bucket would be less fuss, I still want to use some imagination for all of this. Of course I need a formula to determine what force the rod & plate can endure before breakage(point of the junction of the rod and plate) and a index of strengths of various plastic, rubber push rods. One would certainly need knowlege of coefficient of friction of the surface on the inside of the mold, the density of wet sand, the volume of the mold,understanding of Force (I have the index of my old physics book in front of me). I do not think moment of inertia has anything to do with this since rotation is not a factor. (But who knows; I did a paper on construction of one of our main bridges and I remember mention of moment of inertia) I believe gear mechnisms is a little Off Topic. Well, wish me good luck. There is certainly no rush. With the Holiday events, I am not sure if anyone has the patience to wait for comments.

Oih, SparKy, is this you playing a joke on us? That would be just sooo like you. I just knew that you would join us again one day.

Having fun, Are we?

All the best, Ky.

I like your pictures.

OK Heidi

Please let the participants know that you are a bloke (as you stated in one of your many posts, threads on this topic), seeking solutions to a non existing problem and feeding, taking advantage of the name Heidi so that every one goes softly, softly.

I've had enough of this and have shown some respect for your situation. Its like pushing that soft smelly substance up hill and getting nowhere.

What kind of computer do you have? I know, you have told it that many times that it seems you are being paid for it.

And castles made of sand swift into the sea, eventually.

Get a real life and a real name, Ky.

Here you go my friend. You take it from here. I think a picture tells a thousand words. Just buy some balloons and take the pump from car or bicycle and Bob's part of the extended family. Good luck.

Send us some picks when your done. You know how to do it now, Ky

Here is my diabolical plan.... forget the plastic buckets and shovels..

Imagine a truck and trailer backing up to the beach... and unloading a small tracked excavator and a huge pile of strange looking equipment.

• First the excavator piles up a monster pile of sand.... (conversely it could be trucked in)
• then the pile of sand is thoroughly wetted, down (or wetted as it is piled by a pump spray system - part of the equipment)
• then the rest of pile of equipment is assembled into a giant multi-axis cnc system... over top of the giant pile of sand..
• and then I put in my usb memory stick with my 3d design and load that into the cnc system, and push play...
• I lie down for a couple hours and sunbathe in my speedo... sipping margaritas and watching the "scenery"... maybe have a nap...
• and when I wake up, my sandcastle is done... looking like this....

now that... is a sandcastle!

Chris

Yep!

Your the one, the only one

That knows that I'm just writing my song

Down in the sand of the beach

Which was a mountain just before.

From a song of mine (Barbara or Solomon depends who sings it). You should have it somewhere.

The cold is getting to you Mate and don't call them speedo's they are called budgie smugglers here. You better get used to it.

Heidi says hello, Ky.

"budgie smugglers"

PMSL!!!!!!!!!!!!

Extraordinary (I am not sure of how to make an explanation mark}

Do you like puzzles?

Get to it mate, don't waste time. Tide is coming in

Need to know how to rate my own comment. Do I click on the small square in the upper right corner?

I am trying to refer to my handbook of Chemistry & Physics which I have in my bookcase. (1954 - 1955). See page 1982. That page shows tensile strength of metals. I would like to know if there is a similar type of table for plastics & rubber.

http://en.wikipedia.org/wiki/Ultimate_tensile_strength#Typical_tensile_strengths

Thank you. I will need to spend more time on this.

I like my comment, need to know about the small square on the upper right corner: I do not have a "button" on the left. I have a Mac..

I am still not sure on how to rate my own comment. I do not see a button on the left. I do see a small square on the right upper corner. I clicked on that and tried to add a point.

This e-mail address is probably the best one. I am working on the references. Hard to find time though. At some time or another I might send some e-mails that I have in my binder which has all kinds of sand castle information.

If I like my comment and think it has something with the subject, do I click on the small square in the upper right corner?