OMG ! Whose fault?

My samples and booth setup accessories got screwed up by shipping company. Can’t be delivered today! What can I do for next week?

How do you think ?

How do you think ? What will be used for ?

This is one of the biggest differences between DIY projects and industrial manufacturing.
Building a high-precision machine is not simply about assembling the right components. Material selection, structural design, the stability of mineral castings or cast iron, stress control, machining datums, precision grinding, assembly, and inspection all play a critical role in achieving and maintaining accuracy.
DIY builders can create incredibly creative and impressive machines. But achieving industrial-level precision requires much more than good components. It requires manufacturing processes, engineering expertise, and strict quality control that are often invisible from the outside. Can you please let
Me know what project you will consider to use mineral casting as base or frame ? I am considering to do B2C business! Thanks

It is one of the mineral casting projects. Most commonly utilized as the physical framework for flatbed UV digital printers, 3D bioprinters, laser cutters, or automated inspection equipment. Any one experienced to use this material?

This machine is designed to cut very thin metal films (flexible dies) with a thickness of only 0.15 mm.
In this design, we need to ensure that the metal film is uniformly and securely held against the granite surface by vacuum. However, the vacuum force cannot be too strong, because excessive suction could leave visible vacuum marks or impressions on the surface of the thin metal film.
To address this, we designed a large number of small, uniformly distributed vacuum holes across the precision granite surface. These holes are fitted with ceramic inserts, which provide the required precision and durability.
Because the film being cut is extremely thin and the cutting load on the Z-axis is relatively low, we selected a linear motor drive for the Z-axis. This provides smooth, precise, and fast motion while minimizing mechanical contact and maintenance.

Have you ever seen those platforms by using epoxy granite or precision granite as framing? How precise they can reach?

What is the price range in the U.S?

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Please help me out !

Hi everyone,
I have been working in the B2B manufacturing industry for several years, mainly producing custom mineral castings / epoxy granite machine bases for industrial automation and CNC applications.
Most of our work is currently custom OEM production, but I am considering developing a few standardized CNC machine frames/bases for the US DIY and small-machine-builder market.
Instead of starting with a complete CNC machine, the idea would be to sell the mineral cast machine frame/base only, so customers can install their own linear rails, ballscrews, spindle, motors, etc.
Something along these lines:
Mineral cast / epoxy granite construction
High vibration damping
High stiffness
Cast-in steel or aluminum inserts
Machined mounting surfaces
Designed for HGR15/HGR20 linear rails
Ballscrew mounting provisions
STEP/CAD files available
Optional precision machining
I’m trying to understand what size would actually be attractive to DIY CNC builders.
Which of these would interest you most?
A: 400 × 400 mm — ~30–50 kg
B: 500 × 500 mm — ~50–80 kg
C: 600 × 500 mm — ~80–120 kg
D: 700 × 600 mm — ~120–200 kg
And what would you consider a reasonable price for the mineral cast frame/base only, without electronics, spindle, motors or linear rails?
For example:
$500–700
$700–1,000
$1,000–1,500
$1,500–2,500
I’m particularly interested in hearing from people who are currently building a DIY CNC mill/router or considering a new machine.
What would make you choose a mineral cast frame over a welded steel frame or cast iron?
Thanks! I’m genuinely trying to understand the market before investing in tooling and inventory.

Would you prefer to buy:
Raw mineral cast frame
Mineral cast frame with machined mounting surfaces
Fully machined frame with steel inserts and rail mounting surfaces
Complete mechanical kit including rails, ballscrews and mounts

How much does it cost?

I’m currently customizing a high-precision CNC machine for a customer.
When selecting linear guideways for a precision CNC machine, what factors do you usually consider? For example, load capacity, rigidity, accuracy grade, preload, or cost?
Also, which brands of linear guideways do you think offer the best value for money? I’m interested in hearing your experiences with brands such as THK, Hiwin, PMI, Bosch Rexroth, NSK, IKO, Schneeberger, or others.

These anchor inserts are cast into the mineral casting. Do you believe they offer adequate pull-out resistance? Is there any concern that they could become loose or be pulled out under load? Have you come across any alternative anchor designs for mineral castings? Thanks

Regardless of the country, are you aware of any CNC machine manufacturers or automation equipment builders that use mineral castings (epoxy granite) for their machine bases or structural components? I’d appreciate any recommendations or examples.