Injection Molding
Tooling and molding for your repeat plastic parts.
YOUR ALLOY. YOUR DIE. YOUR FINISHED FIT.
Custom Gravity Die Casting Services for Your Housings & Machined Parts
Permanent mold casting services using gravity filling. Plan your alloy, cores, heat treatment and final dimensions before tooling.
Start with CAD model + controlled 2D drawing. Project route and supply scope confirmed during review.
Alloy & Condition
Grade and use conditions
Reusable Tooling
New or existing die review
Final Machining
For your finished interfaces
Sample Evidence
Actual cast parts and acceptance
U.S. Coordination
Dallas-area project support
3 Decisions Before Your Die Is Built
Define the requirements that affect your material, tooling and acceptance plan.
01
Your alloy
Grade, condition and working environment.
02
Your interfaces
Core geometry, machining stock and final fit.
03
Your demand
Trial quantity, first order and repeat demand.
Gravity Die Casting Parts for Your Assembly
Molten metal fills a reusable metal mold under gravity. This page covers gravity filling, not pressure-assisted routes.
Plan Your Gravity Die Casting Housing
Mark sealing faces, bores and assembly datums before the die is built.
| For your function | Environment, mating parts and enclosure needs |
|---|---|
| For your fit | Datums, bores and machined sealing faces |
| For your approval | Surface zones and acceptance records |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Start with Your Casting Grade and Condition
Match the casting specification and delivery condition to your loads, temperature and exposure. Grade, availability and test scope are confirmed during review.
| Your grade | Casting specification and delivery condition |
|---|---|
| Your use | Loads, temperature, fluids and exposure |
| Your records | Material lot and required property tests |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Review Your Reusable Die and Core Plan
Agree release directions, core access and machining stock before permanent mold tooling is built.
| Your die | Parting, draft and release direction |
|---|---|
| Your cores | Location, support and removal access |
| Your final fit | Datums, stock and fixture access |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Agree What Your Actual Casting Must Pass
Use trial castings to confirm the agreed material, cored geometry and finished features. A CNC-only mockup does not validate as-cast quality.
| Your material | Grade, condition and traceability |
|---|---|
| Your casting | Core position, surfaces and specified tests |
| Your final fit | Machined dimensions and datum scheme |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Plan Your Gravity Die Casting Pump Housing
Review internal passages and sealing faces before committing to the die.
| For your flow | Passage geometry and clean-out access |
|---|---|
| For your fit | Core position, wall sections and machining datums |
| For your approval | Surface zones, records and specified tests |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Start with Your Casting Grade and Condition
Match the casting specification and delivery condition to your loads, temperature and exposure. Grade, availability and test scope are confirmed during review.
| Your grade | Casting specification and delivery condition |
|---|---|
| Your use | Loads, temperature, fluids and exposure |
| Your records | Material lot and required property tests |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Review Your Reusable Die and Core Plan
Agree release directions, core access and machining stock before permanent mold tooling is built.
| Your die | Parting, draft and release direction |
|---|---|
| Your cores | Location, support and removal access |
| Your final fit | Datums, stock and fixture access |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Agree What Your Actual Casting Must Pass
Use trial castings to confirm the agreed material, cored geometry and finished features. A CNC-only mockup does not validate as-cast quality.
| Your material | Grade, condition and traceability |
|---|---|
| Your casting | Core position, surfaces and specified tests |
| Your final fit | Machined dimensions and datum scheme |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Locate Your Bracket Around Its Final Datums
Identify loads, mounting bores and final locating faces.
| For your loads | Direction, mounting and working conditions |
|---|---|
| For your fit | Machined pads, fasteners and locating features |
| For your approval | Drawing limits and specified load checks |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Start with Your Casting Grade and Condition
Match the casting specification and delivery condition to your loads, temperature and exposure. Grade, availability and test scope are confirmed during review.
| Your grade | Casting specification and delivery condition |
|---|---|
| Your use | Loads, temperature, fluids and exposure |
| Your records | Material lot and required property tests |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Review Your Reusable Die and Core Plan
Agree release directions, core access and machining stock before permanent mold tooling is built.
| Your die | Parting, draft and release direction |
|---|---|
| Your cores | Location, support and removal access |
| Your final fit | Datums, stock and fixture access |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Agree What Your Actual Casting Must Pass
Use trial castings to confirm the agreed material, cored geometry and finished features. A CNC-only mockup does not validate as-cast quality.
| Your material | Grade, condition and traceability |
|---|---|
| Your casting | Core position, surfaces and specified tests |
| Your final fit | Machined dimensions and datum scheme |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Review Gravity Die Casting for Your Custom Part
Share your drawing, alloy and intended delivery condition to assess the route.
| For your function | Loads, environment and mating parts |
|---|---|
| For your fit | Cored geometry, datums and final dimensions |
| For your supply | Trial, first-order and annual demand |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Start with Your Casting Grade and Condition
Match the casting specification and delivery condition to your loads, temperature and exposure. Grade, availability and test scope are confirmed during review.
| Your grade | Casting specification and delivery condition |
|---|---|
| Your use | Loads, temperature, fluids and exposure |
| Your records | Material lot and required property tests |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Review Your Reusable Die and Core Plan
Agree release directions, core access and machining stock before permanent mold tooling is built.
| Your die | Parting, draft and release direction |
|---|---|
| Your cores | Location, support and removal access |
| Your final fit | Datums, stock and fixture access |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Agree What Your Actual Casting Must Pass
Use trial castings to confirm the agreed material, cored geometry and finished features. A CNC-only mockup does not validate as-cast quality.
| Your material | Grade, condition and traceability |
|---|---|
| Your casting | Core position, surfaces and specified tests |
| Your final fit | Machined dimensions and datum scheme |
Application concepts; geometry, grade and manufacturing scope are reviewed for your project.
Aluminum Permanent Mold Casting: Grade + Condition
Agree the casting alloy and delivery state together; a grade name alone does not define your acceptance.
| Your callout | What to agree |
|---|---|
| Alloy | Exact grade and applicable specification |
| Condition | As-cast or agreed heat-treated state |
| Evidence | Material lot, test specimen and acceptance requirements |
Your Gravity Die Casting Process in 6 Steps
Link the reusable die, actual cast samples and finished drawing in one agreed route.
Prepare the die
Preheat & coat
Set cores, if needed
Pour by gravity
Solidify & remove
Trim & inspect
Casting inspection is followed by any agreed heat treatment, machining and final acceptance.
Resolve 6 Details Before Tooling
Your gravity die casting design guide starts with your critical interfaces.
Review Your Wall Transitions and Fillets
Review abrupt section changes and load-bearing fillets with the material and molding route. Avoid adopting a universal minimum wall.
| Your input | Wall sections, loads and critical radii |
|---|---|
| Our review | Transitions, fillets and local cooling |
Confirm methods, scope and acceptance limits for your part.
Agree Your Die Release and Parting Plan
Review withdrawal direction, die depth and cosmetic or mating faces; define draft for your actual geometry.
| Your input | Release direction and critical faces |
|---|---|
| Our review | Draft, parting and die release |
Confirm methods, scope and acceptance limits for your part.
Keep Your Cored Passages Usable
Identify core location, support, passage intersections and access for removing core material after casting.
| Your input | Passages, intersections and clean-out zones |
|---|---|
| Our review | Core prints, support and removal access |
Confirm methods, scope and acceptance limits for your part.
Review Feeding Around Your Thick Sections
Review hot spots, section transitions and feeding access. Shrinkage compensation in the die does not replace soundness review.
| Your input | Heavy sections and quality requirements |
|---|---|
| Our review | Feeding, hot spots and specified soundness checks |
Confirm methods, scope and acceptance limits for your part.
Protect Your Final Fit After Heat Treatment
Review stock, support and possible distortion before finishing critical bores.
EXAMPLE ROUTE
Cast & trim→Heat treat*→Finish machine→Inspect
*Only when specified and suitable for the alloy. Sequence is reviewed for your part.
| Your input | Final condition, datums and critical dimensions |
|---|---|
| Our review | Heat-treatment route, machining stock and measurement state |
Agree final condition and measurement state before accepting your critical fits.
Leave Stock for Your Finished Interfaces
Identify final bores, threads and datum pads. Agree stock and the inspection state for each critical feature.
| Your input | Final drawing, datums and fixture access |
|---|---|
| Our review | Stock allowance, locating faces and final inspection |
Confirm methods, scope and acceptance limits for your part.
3 Part States. Clear Acceptance.
Agree gravity die casting tolerances by feature and delivery state.
| Part state | What to review |
|---|---|
| As-cast | Casting geometry, core location and available machining stock |
| After heat treatment* | Condition records, distortion review and remaining stock |
| Finish-machined | Final bores, threads, sealing faces and datum relationships |
Where specified. No single tolerance value applies to every feature.
See What Reusable Tooling Adds to Your Part Cost
Separate permanent mold casting tooling cost from recurring production charges.
ILLUSTRATION ONLY — NOT AN LK QUOTE
Assumed one-time tooling: $6,000
500 parts
$12.00 / part
1,500 parts
$4.00 / part
3,000 parts
$2.00 / part
Tooling allocation only: assumed tooling cost ÷ allocated quantity.
Excludes casting, cores, heat treatment, machining, inspection and delivery. Example quantities are not minimum orders.
4 Tooling Terms to Agree
A gravity die casting mold is reusable, not maintenance-free. Confirm scope in your quotation.
Ownership & location
Who owns the die and where it is stored.
Core tooling & consumables
Agree reusable core tooling and recurring core charges.
Maintenance & changes
Agree maintenance, revisions and new sample approval.
Transfer & repeat orders
Conditions for transfer and future releases.
Approve Your Parts with 3 Evidence Groups
Agree the records and acceptance limits you need before release.
Confirm Your Grade and Lot Records
Review the casting grade, delivery condition and material records against your controlled specification.
A CNC-only model does not validate casting soundness or heat-treatment response. Methods, sampling and special tests are agreed for your project.
Approve Cast Samples, Not Only a Machined Model
Review first cast samples from the intended alloy and reusable die route before release.
A CNC-only model does not validate casting soundness or heat-treatment response. Methods, sampling and special tests are agreed for your project.
Approve Your Machined Interfaces
Check bores, threads, mating faces and datums after the specified secondary operations.
A CNC-only model does not validate casting soundness or heat-treatment response. Methods, sampling and special tests are agreed for your project.
Release Your Order with Clear Records
Review acceptance records, labels, part protection and shipping requirements before dispatch.
A CNC-only model does not validate casting soundness or heat-treatment response. Methods, sampling and special tests are agreed for your project.
China Manufacturing. Dallas-Area Coordination.
Coordinate drawing review, sample decisions and delivery with your project contact. Manufacturing scope and location are confirmed in your quotation.
6 Inputs for Your Gravity Die Casting Quote
Send the details that affect cost and acceptance.
- 01CAD + controlled drawing
- 02Casting grade + delivery condition
- 03Trial, first-order + annual quantities
- 04Cores, datums + machined features
- 05Surface + inspection requirements
- 06Required date + delivery location
Answers Before You Commit
Explore Other Casting Routes →Can gravity die cast aluminum be heat treated?
Suitable casting alloys can be heat treated. Confirm the grade, casting condition, heat-treatment route and test basis. Do not assume every alloy can use the same T6 route.
What is permanent mold casting?
A reusable metal mold forms successive castings. This page covers gravity filling; other permanent-mold routes can use pressure assistance and require a separate review.
How much does gravity die casting cost?
Compare die and core tooling with recurring casting, heat treatment, machining, inspection and delivery. The allocation example above divides an assumed tool cost by quantity; it is not a quotation.
What is the minimum order quantity for gravity die casting?
Economic quantity depends on alloy, geometry, core work and acceptance scope. Share trial, first-order and repeat demand; example quantities are not minimum orders.
How long does gravity die casting take?
Agree separate milestones for drawing review, tooling, first cast samples, any heat treatment, machining and approval. Timing is confirmed for the actual scope.
Gravity casting vs die casting: which route fits your part?
Compare alloy, cored geometry, finished features and demand. Gravity filling and high-pressure injection require different tooling and process plans. Review the finished part before selecting the route.
