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Goldland Tong tong rail / Science Books / Teaching aids / After-school materials / Goldberg(International shipping available)

Basic Information
Manufacturer (주)숲속의샘
Country of Origin 한국
Retail Price $10.50
Price $10.50
Reward Points $60.00
Product Code P00000PC
수량 수량증가수량감소

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Goldland Tong tong rail / Science Books / Teaching aids / After-school materials / Goldberg up down 10.5 (  60.00)
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 Download parish materials from the library.
* The copyright of the images and videos is owned by the Forest Spring. Unauthorized use may cause responsibility for use. (See copyright law)








The ball bounces through the rails. You will learn gravity and inertia as you build devices.


"Tong tong Rail"






Material

Corrugated cardboard, Plastic, Rubber, Thread




Components

First rail leg, Second rail leg, Third rail leg, 3 Rails, Rail guard, Bottom of second rail, White rod, Snap button, Red rubber ring, Thread, Switch ,stopper




Goldberg connection. The ball from the other device rolls onto the first rail and bounces to the second and third rails in order. 

On the third rail, the ball rolls under the second rail to activate the switch.

It can be used between E-2 and E-4 and can be used depending on the situation in other devices.






















'Tong Tong Rail' Principle of Science




Gravity : The force by which objects on the earth are drawn toward the center of the earth.


Inertia : The force by which objects on the earth are drawn toward the center of the earth.


Potential energy by gravity : The property of an object trying to continue in a state of stationary or constant motion unless it is subject to external forces.































1 step. Making a rail


① Fold the three rails along the fold line and secure them with snap buttons to fit the holes as shown in the figure.


② Secure the rail guards through the grooves on both sides of the rail.


③ 3 rails completed.












2 step. Making the first rail


① Fold the first rail legs along the fold line and secure them with snap buttons.


② Place the rail on the first rail leg and secure it with the snap button.












3 step. Making the third rail


① Fold the third rail leg along the fold line and secure it with the snap button.


② Place the rail on the third rail leg and secure it with the snap button.












4 step. Making the second rail

① Fold the second rail (Four) along the fold line. 


② Install the two long and two short legs of the second rail facing each other. Then secure the rails with snap buttons.


③ Fold the switch along the fold line and secure it with the snap button.


④ Connect the switch and the stopper with a thread, then tie a knot.


⑤ Fold the bottom of the second rail along the fold line.

Connect the bottom of the second rail and the switch with a white rod and fix it with a red rubber ring.

*Assemble the rubber ring well so that the switch moves well.












5 step. How to operate a 'tong tong rail'


① Install rails side by side in the order of the first rail-the second rail-the third rail.

Adjust the rail spacing so that the ball starts from the first rail and goes well into the second and third rails.












6 step. Connecting Goldberg Devices


① Install the E-4 overpass rail on the front or back of the second rail and secure the ball with the stopper.


② The ball bounces along the rails. Also watch the ball move and the switch in action.









 










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Please take into consideration that some products may take additional time for delivery and processing.
Important: Your order is shipped once your payment has been cleared. Please contact our customer service center if you would like to request an exchange or return on your order.

- Customs and Duties

The recipient will be held responsible for international shipments which may be subject to import duties and taxes. Please be advised that these charges are levied by the destination country and we do not have control over them. In the case that the recipient refuses to receive the parcel, the order will be returned to Korea and will not be re-shipped. Relevant expenses (round-trip shipping, customs, etc.) will be deducted from the refund.

Returns & Exchanges

1. Requirements:

Please take into consideration that we only accept qualifying returns but not exchanges. Refunds are issued once the returned products clear our inspection.

1) An item is eligible for cancellation if:
-you posted a Return request within 24 hours of payment and your order is still under “Pending” status (if your order is under “Queued for Shipment” status, please contact our customer service center) or
-the order is delayed for more than 10 days since payment and you have not received any notification regarding the delay; or
-the ordered item is out of stock.

2) We accept return(s) if:

-you receive a product different from your order; or

-you receive a defective product.

**Return Instructions

(1) Post a return request on our Return forum within three days of receipt. You are required to attach the photos of the received product(s) and include the item code, the order number, and the reason for the return.

(2) A customer service representative will be in contact to assist you by email or phone.

(3) Items returned must be in their original condition, which includes tags and any packaging. Also, you need to include a note of your order number, name, and user ID.

*Please be advised that returns are accepted ONLY IF you followed the instructions above and your return request has been approved by our staff. Returns that are shipped to us without any prior consent are not accepted.

*Please note that EVEN the defective/incorrect item(s) must be returned with all of the tags and labels intact. The item(s) must be sent in their original packaging and unworn.

*Please include all contents of the original package and free gifts (if applicable) in your return packaging.

* Shipping fee for any return caused by our fault will be paid by the company. However, if EMS’ cash on delivery is not possible then you can scan the return receipt and either mail it with the item to return or post an image of it on the forum. The shipping fee will be refunded once the returned item has arrived.

3) We do not accept return(s) if:

-you are returning the items just because you changed your mind (on size, color, etc.)
-you are returning shoes, bags, or any other accessories
-the products are damaged due to your mishandling
-your return request is not approved by our staff

The following items are not considered defective:

* Items that are originally manufactured without tags or labels
* Items with creases that may have been made while shipping
* Items with unsatisfactory/incomplete finish due to mass production

4) If there is a missing item from your order:

*Contact our customer service center by phone or by forum (if you cannot reach us by phone) within 1 day of delivery.
*Please keep all contents of the original package including packaging material (boxes, plastic bags etc.) with you until you are instructed otherwise.

Please note that we may not be able to process the refund for your missing item if you lose or damage any packaging material.

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