Sheet metal and fabrication units can use AI to build custom fabrication management software for enquiries and weight-based estimating, drawing and revision access on the floor, job cards routed across cutting, bending, welding, finishing and assembly, work in progress by stage, offcut and remnant stock, outsourced powder coating and galvanising, inspection and on-time dispatch tracking. Pentoggle is an AI platform that generates production-ready software from a plain English description, which means a fabrication shop can build an application around its own stages and materials instead of adapting to a system built for a different kind of factory.
Most fabrication units in India already run Tally for accounting, some run Busy or Marg, and larger businesses may run SAP Business One. Those systems handle purchase, sales, GST and accounting well. This is not a proposal to replace them. Pentoggle builds the shop-floor application around them, covering the workflows they were never designed for.
Fabrication earns differently from machining. A machine shop sells machine hours against a drawing. A fabrication unit buys sheet by weight, sells a finished assembly, and makes or loses its margin in the gap between the two. Material is often the largest line in the quotation, so the business is decided by how much of every sheet becomes product and how much becomes scrap, and by whether the job leaves on the day you promised.
Key takeaways
- A fabrication job passes through more hands than a machined part, so the useful record is stage-wise work in progress rather than machine loading.
- Drawings move around the shop on paper, and the most expensive mistake in fabrication is a fitter working from an old printout.
- Offcuts and remnants are stock, and most shops treat them as scrap because nobody records what is left after a nest is cut.
- Powder coating and galvanising usually go outside, and that is where delivery dates are lost.
- The number that runs a fabrication unit is on-time dispatch measured against the date you originally promised, split by the stage where the time went.
Why fabrication units are badly served by existing software
Tally handles the books, and it handles them well. What it does not know is that the job for a customer is cut and bent, is sitting at the welding bay waiting for a fitter, and cannot be dispatched because the powder coater has not returned it. Nobody knows that in one place. It is spread across a supervisor, a whiteboard and a phone call.
Packaged manufacturing ERP struggles here for a different reason than in machining. It assumes a bill of materials with defined child parts, and a fabricated assembly rarely has one at order stage. What exists is a drawing, a material estimate in kilograms and a delivery promise. The bill of materials is often incomplete at order stage and evolves as the job progresses, which is the opposite of how most packaged ERP systems expect to work.
Nesting software solves a real problem and solves it well, but it stops at the cutting table. It does not follow the part to bending, welding or coating, and it does not know what happened to the remnant after the nest ran.
Most shops are running some combination of the first two columns below.
What fabrication units use today, and what they can build instead
| Whiteboard and Excel | Packaged manufacturing ERP | Application built with Pentoggle | |
|---|---|---|---|
| Estimating | Per kilogram plus a feel for the work | Costing against a BOM that does not exist yet | Weight, cutting, bend count, weld length and finish area |
| Drawings on the floor | Printouts, sometimes an old one | Attachment on the order, not at the bay | Current revision viewable at each stage on a phone |
| WIP | Known by walking the shop | Production order status | Stage-wise view of every job, updated where the work happens |
| Offcuts and remnants | Stacked in a corner, forgotten | Treated as scrap in inventory | Recorded by size and grade, searchable at estimating |
| Outsourced coating | Challan book and follow-up calls | Subcontract module, rarely used | Challan out with ageing, visible on the same WIP view |
| Delivery promises | Revised verbally, then revised again | Order due date, overwritten silently | Original promise retained alongside every revision |
| Inspection and dispatch | Paper checklist, photographs on a phone | Quality module priced separately | Checks tied to the job, photographs attached at dispatch |
What a fabrication unit can build
Each of these can be built separately or combined. Most shops start with stage-wise WIP and drawing access.
Enquiry and estimating register
Customer, drawing, material grade and thickness, estimated weight, cutting and bending content, finishing, and the quoted rate with its revision history.
Job card routed by stage
Cutting, bending, welding, grinding and finishing, assembly, inspection and dispatch, each with who did it and when it moved.
Stage-wise WIP view
Every open job and the stage it is sitting at, including jobs currently outside for coating, so the shop sees all its work in one place.
Drawing and revision access
Drawing number and current revision on the job card, the file viewable at each bay, revision history retained and old revisions marked clearly.
Offcut and remnant register
What is left after a nest, recorded by grade, thickness and usable size, with a location, so the estimator can check remnants before buying a fresh sheet.
Outsourced process tracking
Challans to the powder coater or galvaniser, expected return, ageing and the material value sitting outside.
Inspection and dispatch records
Dimensional checks, coating thickness where relevant, photographs attached to the job, and the packing list.
Delivery performance
Original promised date, every revision, actual dispatch date, and the stage where the delay occurred.
The drawing is not the problem, finding the latest one is
In a machine shop a drawing sits at a machine. In fabrication it travels. It goes to the cutting table, then bending, then the welding bay, then the fitter doing assembly, and each of those is a different person who may have taken a printout at a different time. When the customer issues a revision, the shop has to find every copy.
The failure is almost never the drawing office. It is a fitter working carefully and correctly from Revision C while the cut parts on his table were made to Revision D. The work is good and the assembly is wrong, and it is discovered at inspection or, worse, at the customer's site.
Fixing this does not need a document control system. It needs the current revision to be viewable at each bay on a phone, the job card to carry the revision it is running, and the old revision to be visibly marked as superseded rather than quietly replaced. Once that exists, the question of who is holding an old print stops being answered by walking the shop.
For what happens to jobs already in progress when a revision lands, see the machine shop guide, which covers revision consequence in detail.
The remnant is stock, not scrap
Every nest leaves material behind. A shop that cuts a 2500 by 1250 sheet and uses seventy percent of it has three hundred and seventy five kilograms of decision to make on every tonne it buys. In most units that decision is made by gravity. The remnant goes to a stack in the corner, and the stack is either raided by whoever remembers what is in it or eventually sold as scrap by weight.
The difference between those two outcomes is real money, because remnant used on a job is material you have already paid for at full rate and would otherwise recover at scrap rate. A shop with any repeat work and any small-part work has a steady demand for exactly the sizes sitting in that stack.
What makes it usable is a record rather than a stack: grade, thickness, usable dimensions and where it physically is, checked at estimating before a fresh sheet is committed. This is one of the few changes in fabrication that pays for itself in weeks, and it requires no change to how anyone cuts.
Delivery dates are lost outside the shop
Powder coating and galvanising usually go out. So does bought-out machining and sometimes bending on thicknesses your press brake will not take. Once the job leaves your gate it disappears from the whiteboard, and the shop stops counting it as work in progress even though it is the only thing standing between the job and dispatch.
The pattern is consistent. A job is chased hard through cutting, bending and welding, then goes to the coater and sits for six days while nobody asks, and the delivery slips by exactly that much. When the customer complains, the shop reviews its internal stages and finds nothing wrong, because nothing was wrong internally.
Jobs sitting outside belong on the same view as jobs on the floor, with an expected return date, an age and a value. A shop that can see three hundred thousand rupees of material at the coater for eight days makes a different phone call than one that cannot.
Why building this is now practical
A fabrication unit with a laser, two press brakes and fifteen welders has never been able to justify custom software. A development team, a specification document and a six month build were never going to be recovered on jobs quoted per kilogram.
That has changed. With Pentoggle you describe how your shop runs, including your stages, your materials, your outsourced processes and the way you quote, and get a working application. When you add a machine, take on a customer with a different inspection format, or start recording remnants, you describe the change and the application updates. Most shops start with stage-wise WIP and drawing access, because those two together remove the majority of the daily phone calls, and add estimating and remnant tracking afterwards.
Why fabrication units choose Pentoggle
Built around your stages
Cutting, bending, welding, finishing and assembly as you actually run them, not a generic routing.
Works alongside Tally
Pentoggle handles the floor, the drawings and the delivery tracking. Your accounting stays where your CA already works.
Built for Indian documentation
GST invoicing with HSN codes, delivery challans, e-way bill workflows and challan records for material sent out for coating.
Usable at the bay
Stage updates and drawing access on a phone, because a system the welding supervisor will not open is worse than the whiteboard.
Changes in days
A new customer requirement does not become a three month project.
The one number that runs a fabrication unit
On-time dispatch against the date you originally promised, split by the stage where the time was lost.
Most shops measure on-time delivery against the revised date, which makes the number look acceptable and teaches you nothing, because the date was revised precisely when the job was going to be late. Measuring against the original promise is uncomfortable for the first month and useful from the second.
The split is what makes it actionable. If the time is being lost at welding, the answer is capacity or sequencing. If it is being lost at the coater, the answer is a second coater or a different arrangement with the first. Those are entirely different decisions, and a single delivery percentage cannot tell you which one you are facing.
Ready to build fabrication software?
The drawing is not the problem. Finding the latest drawing is.