01 / 10 · Change control after the first trial
Investment Casting Tool Changes After a Drawing Revision
A revised bracket drawing can change more than the wax tool. Before the next trial, connect the changed features to casting geometry, machining and the samples you need to approve.
Send Relia both revisions with the changes marked. We review the affected features and define the tooling work, sample scope and commercial milestones before the revision is released.
Review your drawing change
02 / 10 · Factory change review
A Controlled Change Instead of a Silent Substitution
Relia keeps the approved version and the requested version distinct. The change agreement identifies what will be modified, what remains valid and what must be checked again.
The reference used for the existing trial.
The features affected in tooling, casting or machining.
The version that authorizes subsequent production.
03 / 10 · Engineering input
A Feature-by-Feature Revision Comparison
Mark each changed dimension, hole, contact and section. Include the reason for the change, such as a revised mating part or additional clearance.
A clear change list separates an altered cast envelope from a machining-only change. It also identifies requirements that remain unchanged, including the selected material and delivered condition.
Connect the change to your sample and pilot-production plan04 / 10 · Wax pattern and tooling
Wax-Tool Features Affected by the Change
Investment casting uses an expendable pattern to define the shape inside a ceramic mold. A change to that pattern geometry can affect its tooling and the later casting route.
Outline, wall or opening
Review the wax pattern, tooling access and the resulting casting geometry.
Hole, face or local stock
Establish whether the existing blank still supports the revised machining requirement.
Version and marking
Keep revised patterns, castings and sample records connected to the approved change.
Keep the tooling proposal attached to the revision
Identify the affected tool features and the proposed repair, insert change or replacement where applicable. Tool reuse and modification feasibility are conclusions of that specific review.
05 / 10 · Beyond the wax pattern
Casting and Machining Consequences
A thicker boss, relocated hole or extended arm can change the relationship between the cast section and the finished feature. Review local machining stock, tool access and the references used to hold the part.
The existing machining fixture or inspection setup may need a change even when the main wax tool can be retained. Include these downstream items in the proposal so the next sample evaluates the full revised component.
06 / 10 · Tooling decision
Reuse and Replacement Boundaries for Tooling
Separate tooling work from new machining fixtures, gauges or sample quantities. Agree the actual charges and timing against those listed deliverables.
Review a separate enquiry involving transferred or customer-owned tooling07 / 10 · Quality agreement
The Sample Characteristics to Reapprove
Recheck the changed features and the related interfaces they can influence. Keep the sample identity, drawing revision and supplied condition together.
Record the new geometry and acceptance limits.
Check affected assembly contacts, fits and locating relationships.
Obtain approval before the revised version enters batch production.
Relia can provide agreed key dimensional records; measured features and sampling frequency are defined per order.
08 / 10 · Related component families
Bracket and Fork Geometry for Revision Planning
The catalogue includes mounting brackets, tongue plates, fork ends and stepped profiles. Use the relevant component family to begin the discussion, then attach the actual before-and-after drawings.
View investment-cast mounting and bracket componentsView fork ends, slotted brackets and bored profiles09 / 10 · Purchasing release
Cost and Release Milestones for the Revision
Approve the change scope
Agree drawing revision, tooling and fixture work, sample quantities and quoted milestones.
Approve the revised sample
Record acceptance, the production version and the treatment of any earlier-version stock.
This keeps an engineering change connected to the purchasing decision rather than allowing a new drawing to replace an approved reference without a release record.
10 / 10 · Start the change review
Send the Previous and Revised Drawings
Send Relia the marked change, previous approval reference, material and expected quantities. Include the mating-part change or assembly requirement that explains the revision.
Email the drawing revisions- [email protected]
- Phone
- +86 185 6176 2631
- +1 404 203 0971
- Company and address
- Relia Casting
No. 96 Shuyuan Road
Qingdao, Shandong, China