Borosilicate Glass Hourglass Manufacturer
Factory Wholesale Hourglass Timer
Hand blowing process can be customized shape and size, cheap mold cost
Regular hourglass time: 3 minutes, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 60 minutes or customized time
Regular sand color: green, blue, champagne, yellow, purple, black, white, pink or custom color
Small orders accepted
15 days delivery time
The most famous story about the hourglass
An hourglass, also known as a sand clock, is a device used for measuring time. Its principle is similar to that of the ancient water clock, as it measures time based on how long it takes for sand to flow from one container to another. This sand-flow method of timekeeping was developed to avoid issues with water freezing in cold winter weather.
Factors affecting the timing of an hourglass include the amount of filler, the curve of the inner glass walls, the width of the neck passage, and the type and quality of the filler material. Modern hourglasses are crafted with precision-blown glass bulbs. According to documentation from German hourglass manufacturer KOCH, the margin of error for a 30-minute hourglass can be controlled within 1 minute, while for a 1-hour hourglass, the error is within 5 minutes.
It’s possible that during Magellan’s circumnavigation of the globe, he placed 18 hourglasses on each of his ships for timekeeping. But why can hourglasses measure time? The key lies in their cyclic nature, allowing an hourglass to serve as a rough benchmark for past intervals, letting us compare a span of past time with the present. However, they’re limited to measuring intervals and can’t be used to track seconds precisely.
The hourglass itself is a complex dynamic system, and research on it is limited. In 1966, researchers at the University of Leicester in the UK studied hourglasses and found that the sand flow rate is affected only by the sand located a few centimeters above the neck, not by the total amount of sand in the hourglass. They replaced the sand with small glass beads and discovered that, if the beads were uniformly sized, the timing duration of the hourglass depended on three factors:
1. The total volume of glass beads
2. The diameter of the opening
3. The shape of the hourglass
If the opening’s diameter exceeds five times the diameter of the beads, the following relationship holds: \( P = K \times V \times (D – d)^{-2.5} \), where \( P \) represents the duration, \( K \) is a proportionality factor related to the shape of the hourglass, \( V \) is the total volume of beads, \( D \) is the neck diameter, and \( d \) is the bead diameter. For a wine-bottle-shaped hourglass, \( K \) is approximately 21. Isn’t that amazing? Physics is everywhere in daily life; what’s often missing is the eye to notice it.
Why does an hourglass keep time?
The Mystery of Physics in the Hourglass
Among the seven SI base units, mass holds a unique place as the only unit still defined by a physical object. The “International Prototype of the Kilogram” (IPK) remains housed at the International Bureau of Weights and Measures in France. Besides mass, time is another unit with special characteristics. In the SI system, time is defined as the duration of 9,192,631,770 cycles of the radiation corresponding to the transition between two hyperfine energy levels of the ground state of the cesium-133 atom—a rather lengthy definition, so let’s set it aside for now.
One day, this spirit shortens a certain minute by two seconds for everyone globally and then readjusts all clocks. You’d never know that your last minute was two seconds shorter than the next. This hypothetical scenario has indeed been a topic of interest for both physicists and philosophers, not in terms of whether such a spirit exists, but in considering the possible flaws in how we measure time. Since time is a variable quantity, we measure it by relying on a chosen cyclical process, hoping that the cycle remains stable.
In ancient times, however, without these sophisticated methods, how did people keep time? The earliest timekeeping device used was the sun; people distinguished time by observing the sun’s position, making it an affordable and convenient “clock” viewable with just a glance. But while the sun worked well for measuring longer spans of time, shorter intervals posed a challenge. Ingeniously, people invented the water clock, which used the steady dripping of water to measure time. This device dates back to around the 3rd century BCE, resembling the hourglass concept in how it marks time through a falling substance.
Some speculate that the hourglass may also date back to the 3rd century BCE, though remarkably, the earliest recorded mention of an hourglass appears in a 1338 painting—nearly as recent as the invention of the mechanical clock. Why the late appearance? Perhaps because water clocks were deemed sufficient for timekeeping until then.
Handvivo Custom Good QualityHourglass Timer
Colored borosilicate glass is a special type of glass whose recipe can be varied depending on the desired color. Generally speaking, the formula of colored high borosilicate glass includes the following main components: Silicate: about 60%~75% of the total formula. Borate: about 10%~25% of the total formula. Metal oxides: such as iron oxide, cobalt oxide, copper oxide, etc., are used to adjust the color and light transmittance, accounting for about 1% to 10% of the total formula. Carbonate: used to adjust the melting point and viscosity of glass, accounting for about 1%~5% of the total formula. Other additives: such as fluoride, chloride, magnesium oxide, etc., are used to improve the physical properties and chemical stability of the glass, accounting for about 1% to 5% of the total formula. It should be noted that the formula of high borosilicate glass of different colors will be different, so the specific formula needs to be adjusted according to the required color and performance requirements.
Table Of Contents For This Page
It is not easy to introduce all aspects of custom hourgalss, so we have prepared a lot of information on this page for you to delve into. To make sure you can find the information you want quickly, we have prepared this content directory that will jump to the corresponding location when you click on it.
General Applications For Hourglass Timer
Hourglasses are used for timekeeping, in kitchens, restaurants, everywhere.
At the same time, the flow of sand will make people quiet. It can be seen everywhere in sports venues and beauty salons.
The flowing sand hourglass stimulates people’s senses, and it is a toy for children’s concentration and ADHD training.
General Hot Selling Products
High Borosilicate Glass Hourglass
- Customized Sand Color
- Customized Sand Timer
- Customized Glass Shape
- Customized Glass Color
- Customized Packing
- Customized LOGO
Regular time: 3 minutes, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 60 minutes
Regular size: 6*4CM, 9*5.5CM, 12.5*4.7CM, 16*6.5CM, 21*7.5CM, 24*10CM
Regular sand colors: red, green, blue, black, yellow, purple.
Hand-Blown Sand Timer
- Customized sand color
- Customized Timer
- Customized Packing
- Customized LOGO
Regular size:5.3×5.3×12 CM, 5.8×5.8×15.3CM, 8*8*20CM,
Regular sand colors: red, green, blue, pink, purple.
Color Glass Hourglass
- Customized Glass Color
- Customized Sand Color
- Customized Packing
- Customized LOGO
Regular size:16.5*9cm, 16.2*8.3cm, 18*9cm, 21*8cm.
Regular sand colors: pink, blue, green, red.
Regular Packing: Each opp bag with white box, 48 pcs/ctn.
Carton size:42.5*29.3*31.3cm 12.18kg
Decorative Wooden Sandglass
- Customized Sand Color
- Customized Wooden Color
- Customized Packing
- Customized LOGO
Regular size:Customized
Regular sand colors: black, red, green, pink.
Regular Packing: Each opp bag with white box, 72 pcs/ctn.
Carton size:46.75*35.34*35.5 cm 18.18kg
Production Process
About this item
Hourglass sand timers-Made By high borosilicate glass,hand-blown and high definition, classy and lightweight.
Hourglass sand timers-A helpful time tool for your life.The sand timer can provide an optimal time frame for work and rest, and cultivate the sense of time to increase. efficiency.
6 options of hourglass Sand Timers-3minutes,5minutes,15minutes,30minutes,45minutes,60minutes;You can choose different colors with different durations to meet various needs
Hourglass sand timers can apply to different occations, work, yoga,decorations and more and can be a great gift for your family and friends.
Our hourglass sand timers are packed with polyform,which ensures the safety during shipping.If you received any damaged product, please contact with our customers.
Estimated Cost Analysis For Hourglass Timer
Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation.
Let's use a 5-minute glass hourglass as an example, 5 minute hourglass, Size: 9*5.5cm packing: Each foam with box, 120pcs per box, carton size: 60*60*40CM, weight: 9KG
$880
Take US as an example, total: 1.30CBM, 81KG by sea freight schedule: around 30 days after vessel leave
$480
The Process Flow & Duration Estimation
Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation.
Step 1: Obtain designs and communicate details (3-5 days)
If you have a design, please provide it directly
If you have an idea, please let us know, you can use pictures, hand-drawing, text, etc., our design team will combine the products to give you several different design solutions for you to choose from.
Step 2: Sampling (7-14 days)
After the design is confirmed, samples will be produced according to the size, shape, color, and position of the manuscript.
Step 3: Pay The Bill (within 1 day)
All materials involved in the design draft are ready to be sent to the proofing workshop within 1 day.
Step 4: Bulk Manufacturing (30-45 days)
After the samples and orders are confirmed, a production notice will be sent to the workshop, and the workshop will start mass production and internal QC inspection according to the company’s production flow chart.
Step 5: Shipping
Our Port Name : Shenzhen
Air Express: 5-7days
Air Freight: 15days
Sea freight: 30-40 days different time in different countries
Want to know how to compress lead times?
a. Confirm samples through pictures and videos, saving sample delivery time
b. Directly confirm the order, we will make pre-production samples at the same time of ordering raw materials, pre-production samples can be confirmed by pictures and videos, and large quantities will be produced directly after confirmation.
c. Copy our ready-made design
The Common Pitfalls When Purchasing
Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation.
- Product surface scratches
- can't flow
- Inaccurate time
- Incorrect color
- Unsafe packaging
Feedback From Customers, Why Choose Handvivo?
Customer purchases goods from our factory in. Amazon made intermediate profits from sales, This video from his introduction
The benefits of purchasing from the source factory:
a. OEM/ODM are welcome
b. More advantageous prices than wholesalers and intermediaries
c. Solve your problems directly and quickly, whether it is before production or after sales
d. You can get a bigger profit margin, whether it is selling on the online platform or in the physical store
e. Ten years of export experience to help you solve troublesome problems such as customs, transportation, and safe packaging.
FAQs
From Handvivo
Are you a factory or trading company?
We are a highly successful and rapidly growing family business that has expertly integrated manufacturing and trading of industrial liquid crafts gifts.
How to protect our rights?
All shipment products are documented, and we provide OEM services to many brands without any information about our manufacturer of the goods. Any drawings, operating instructions, test reports, etc., belong to the brand owner.
What is the minimum order（MOQ）?
The minimum order quantity for customized products is 1000 pcs
The minimum order quantity for existing regular products is 500pcs
Can you provide a price list or quote for your products?
Yes, we can provide a price list for us existing design or a customized quote based on your specific product requirements, quantity, and other factors. Please contact our sales team for further assistance.
How long is the order production lead time?
1. Standard Products
- Lead Time: 1-2 weeks
- For items that are already in production or require minimal customization, lead times are generally shorter.
2. Custom Products
- Lead Time: 3-6 weeks
- Custom products may take longer due to design, material sourcing, and production adjustments. This includes items that need to be made to specific specifications or require special finishes.
3. Large Quantity Orders
- Lead Time: 4-8 weeks
- Bulk orders or high-volume production runs can take more time, depending on the capacity of the production line and the availability of raw materials.
4. Complex or High-Tech Products
- Lead Time: 6-12 weeks
- Products that involve complex manufacturing processes, advanced technology, or multi-part assembly may require longer lead times.
5. Rush Orders
- Lead Time: 1-2 weeks (with additional fees)
- Some manufacturers offer expedited production for an additional fee. However, this depends on the current production capacity and the nature of the order.
What are the common payment terms when purchasing from China?
Pay 30% in advance and 70% before shipment by T.T. (Standard Products)
Pay 100% in advance by T.T. (Existing Products)
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OEM & ODM are welcome.
Find the one that works best for you.
