China OEM New DIY Wooden Retro Convertible Car 3D Jigsaw Puzzle Wooden Assembly Cars Toys Hand Work for Kids with Best Sales

Product Description

Mechanical Hummingbird Model 3D Puzzle Assembling Toys For Kids and Adult Jigsaw Puzzle Wooden Crafts Decoration


Product Description

Pls contact us for the pictures and best ship cost to your door according to order details, thank you ^^  

 Our Advantages:
*. 14 years online shop supplier experience.
*. Thousands of hot selling products.
*. 24 hours online service.
*. Whole process quality tracking.
*. Mailbox packaging.
*. Small quantity in 1 container in order.
*. In time update our products and match market’s request.

Product Type:

Kinetic energy sculpture




Folk Art


Home Decoration



Regional Feature:


Place of Origin:

ZheJiang , China

Processing customization:



Rotary windmill

Manufacturing process:


Surface technology:

Spray painting

Decorative pattern:


Swing hanging form:




Applicable scenario:

Home Furnishing

Manufacturing method:

Semi manual and semi mechanical


Carton packaging

Stereo Mechanical Early Education Assembled Early Childhood Education Diy 3d Puzzle Model Baby Educational Wooden Toys

DIY Steam Train High Difficulty Assembled Mechanical Model

Design and Manufacture experts of 3D Jigsaw Puzzle

Product Specification

Item Name

DIY Wooden Steam Train



Assembly Size

295*110*120 mm

Package Size

320*240*40 mm


242 g

Recommended Age




Product advantage:
1.OEM, customized logo,packing,etc are acceptable. 
2.Unique and innovates products with Eco-friendly 
3.Perfect handicarft, high quality with competitive price, as well as excellent pre-sales & after-sales service. 
4.Sample available. 
5.Cooperating with many famous customers.



Company Profile

HangZhou HangZhou Household Co., Ltd. is a manufacturer and trader located In HangZhou, ZheJiang Province. It takes 1 hour from Hong kong airport and takes 30 minutes from HangZhou airport to our company.

We have 10 years of experience for home&pet products’ production and export. The main products are pet supplies and accessories products factory manufacturing in one-stop selection.

We also support agent purchasing and drop shipping. Welcome to work with us, thank you.



Cooperative brand

Packaging & Shipping



Q:Could we visit your company and factory?could you pick we up?
A:Warmly welcome to visit our factory.we are located at HangZhou city,which is half hour’s drive from HangZhou airport,one hour’s drive from hongkong and half’s drive from HangZhou airport.when you arrive at HangZhou, we could pick you up whenever and wherever.

Q:Could you provide drop shipping?
A:We have the drop shipping service team,we could CZPT and help to build up new business in website such as shopify.clear photo and video could be provided.

Q:Have you got oversea warehouse and could you delivered the goods to FBA warehouse?
A:we have served many Amazon/Ebay/Facebook/Youtube/Shopify Seller to build up business.Goods could be delivered to oversea FBA warehouse.if you have regular montly purchacing,we could help to keep stock at oversea warehouse.

Q:Which country is your main market?
A:We mainly export to North America,USA,Canada,European Union,Russia, United kingdom,Australia and Customers from Other country are welcomed.

Q:Could you OEM or ODM the product?
A:We have 14 years experience on Home and Pet supplies product.we strongly focus on small quantiy procution.please provide us the authorization letter and also Logo other customized content.

Q:How long will you ship out the goods?
A:RTS product will ship in 3-7 work days.OEM/ODM sample will ship in 5-10 work days.OEM/ODM production will be 30-45 work days.

Q:How is your product quality and how to control it?
A:we have incoming material checking and process checking and final quality checking when ship out the products.and third party inspection is welcome to audit the factory production.

Q:What are your Payment Terms?
A:We could accepted T/T transfer,Ali Assurance,Paypal,Western Union,Visa and so on.

Q:What are your Delivery Terms?
A:We mainly focus on EXW factory,FOB HangZhou,CIF,DAP.and other terms could be negotiated.

Q:Could we order under the MOQ?
A:We trust in our company supply chain control,and could help our client to grow from small business into bigger order under MOQ could be supported.Mix colors and Mix sizes are accepted.

Q:Have you got e-catalogue about your products?
A:We have built e-catalogue and product stock for your further comfirmed.will you kinldy contact to have more info.


Screws and Screw Shafts

A screw is a mechanical device that holds objects together. Screws are usually forged or machined. They are also used in screw jacks and press-fitted vises. Their self-locking properties make them a popular choice in many different industries. Here are some of the benefits of screws and how they work. Also read about their self-locking properties. The following information will help you choose the right screw for your application.

Machined screw shaft

A machined screw shaft can be made of various materials, depending on the application. Screw shafts can be made from stainless steel, brass, bronze, titanium, or iron. Most manufacturers use high-precision CNC machines or lathes to manufacture these products. These products come in many sizes and shapes, and they have varying applications. Different materials are used for different sizes and shapes. Here are some examples of what you can use these screws for:
Screws are widely used in many applications. One of the most common uses is in holding objects together. This type of fastener is used in screw jacks, vises, and screw presses. The thread pitch of a screw can vary. Generally, a smaller pitch results in greater mechanical advantage. Hence, a machined screw shaft should be sized appropriately. This ensures that your product will last for a long time.
A machined screw shaft should be compatible with various threading systems. In general, the ASME system is used for threaded parts. The threaded hole occupies most of the shaft. The thread of the bolt occupy either part of the shaft, or the entire one. There are also alternatives to bolts, including riveting, rolling pins, and pinned shafts. These alternatives are not widely used today, but they are useful for certain niche applications.
If you are using a ball screw, you can choose to anneal the screw shaft. To anneal the screw shaft, use a water-soaked rag as a heat barrier. You can choose from 2 different options, depending on your application. One option is to cover the screw shaft with a dust-proof enclosure. Alternatively, you can install a protective heat barrier over the screw shaft. You can also choose to cover the screw shaft with a dust-proof machine.
If you need a smaller size, you can choose a smaller screw. It may be smaller than a quarter of an inch, but it may still be compatible with another part. The smaller ones, however, will often have a corresponding mating part. These parts are typically denominated by their ANSI numerical size designation, which does not indicate threads-per-inch. There is an industry standard for screw sizes that is a little easier to understand.

Ball screw nut

When choosing a Ball screw nut for a screw shaft, it is important to consider the critical speed of the machine. This value excites the natural frequency of a screw and determines how fast it can be turned. In other words, it varies with the screw diameter and unsupported length. It also depends on the screw shaft’s diameter and end fixity. Depending on the application, the nut can be run at a maximum speed of about 80% of its theoretical critical speed.
The inner return of a ball nut is a cross-over deflector that forces the balls to climb over the crest of the screw. In 1 revolution of the screw, a ball will cross over the nut crest to return to the screw. Similarly, the outer circuit is a circular shape. Both flanges have 1 contact point on the ball shaft, and the nut is connected to the screw shaft by a screw.
The accuracy of ball screws depends on several factors, including the manufacturing precision of the ball grooves, the compactness of the assembly, and the set-up precision of the nut. Depending on the application, the lead accuracy of a ball screw nut may vary significantly. To improve lead accuracy, preloading, and lubrication are important. Ewellix ball screw assembly specialists can help you determine the best option for your application.
A ball screw nut should be preloaded prior to installation in order to achieve the expected service life. The smallest amount of preload required can reduce a ball screw’s calculated life by as much as 90 percent. Using a lubricant of a standard grade is recommended. Some lubricants contain additives. Using grease or oil in place of oil can prolong the life of the screw.
A ball screw nut is a type of threaded nut that is used in a number of different applications. It works similar to a ball bearing in that it contains hardened steel balls that move along a series of inclined races. When choosing a ball screw nut, engineers should consider the following factors: speed, life span, mounting, and lubrication. In addition, there are other considerations, such as the environment in which the screw is used.

Self-locking property of screw shaft

A self-locking screw is 1 that is capable of rotating without the use of a lock washer or bolt. This property is dependent on a number of factors, but 1 of them is the pitch angle of the thread. A screw with a small pitch angle is less likely to self-lock, while a large pitch angle is more likely to spontaneously rotate. The limiting angle of a self-locking thread can be calculated by calculating the torque Mkdw at which the screw is first released.
The pitch angle of the screw’s threads and its coefficient of friction determine the self-locking function of the screw. Other factors that affect its self-locking function include environmental conditions, high or low temperature, and vibration. Self-locking screws are often used in single-line applications and are limited by the size of their pitch. Therefore, the self-locking property of the screw shaft depends on the specific application.
The self-locking feature of a screw is an important factor. If a screw is not in a state of motion, it can be a dangerous or unusable machine. The self-locking property of a screw is critical in many applications, from corkscrews to threaded pipe joints. Screws are also used as power linkages, although their use is rarely necessary for high-power operations. In the archimedes’ screw, for example, the blades of the screw rotate around an axis. A screw conveyor uses a rotating helical chamber to move materials. A micrometer uses a precision-calibrated screw to measure length.
Self-locking screws are commonly used in lead screw technology. Their pitch and coefficient of friction are important factors in determining the self-locking property of screws. This property is advantageous in many applications because it eliminates the need for a costly brake. Its self-locking property means that the screw will be secure without requiring a special kind of force or torque. There are many other factors that contribute to the self-locking property of a screw, but this is the most common factor.
Screws with right-hand threads have threads that angle up to the right. The opposite is true for left-hand screws. While turning a screw counter-clockwise will loosen it, a right-handed person will use a right-handed thumb-up to turn it. Similarly, a left-handed person will use their thumb to turn a screw counter-clockwise. And vice versa.

Materials used to manufacture screw shaft

Many materials are commonly used to manufacture screw shafts. The most common are steel, stainless steel, brass, bronze, and titanium. These materials have advantages and disadvantages that make them good candidates for screw production. Some screw types are also made of copper to fight corrosion and ensure durability over time. Other materials include nylon, Teflon, and aluminum. Brass screws are lightweight and have aesthetic appeal. The choice of material for a screw shaft depends on the use it will be made for.
Shafts are typically produced using 3 steps. Screws are manufactured from large coils, wire, or round bar stock. After these are produced, the blanks are cut to the appropriate length and cold headed. This cold working process pressudes features into the screw head. More complicated screw shapes may require 2 heading processes to achieve the desired shape. The process is very precise and accurate, so it is an ideal choice for screw manufacturing.
The type of material used to manufacture a screw shaft is crucial for the function it will serve. The type of material chosen will depend on where the screw is being used. If the screw is for an indoor project, you can opt for a cheaper, low-tech screw. But if the screw is for an outdoor project, you’ll need to use a specific type of screw. This is because outdoor screws will be exposed to humidity and temperature changes. Some screws may even be coated with a protective coating to protect them from the elements.
Screws can also be self-threading and self-tapping. The self-threading or self-tapping screw creates a complementary helix within the material. Other screws are made with a thread which cuts into the material it fastens. Other types of screws create a helical groove on softer material to provide compression. The most common uses of a screw include holding 2 components together.
There are many types of bolts available. Some are more expensive than others, but they are generally more resistant to corrosion. They can also be made from stainless steel or aluminum. But they require high-strength materials. If you’re wondering what screws are, consider this article. There are tons of options available for screw shaft manufacturing. You’ll be surprised how versatile they can be! The choice is yours, and you can be confident that you’ll find the screw shaft that will best fit your application.

China OEM New DIY Wooden Retro Convertible Car 3D Jigsaw Puzzle Wooden Assembly Cars Toys Hand Work for Kids   with Best SalesChina OEM New DIY Wooden Retro Convertible Car 3D Jigsaw Puzzle Wooden Assembly Cars Toys Hand Work for Kids   with Best Sales