I handle purchasing for a 200-person company—everything from desk chairs to calculators to printer contracts. That's roughly $80,000 a year across eight vendors. When I took over in 2020, I figured equipment buying would be the boring part of my job. Turns out, it's full of small decisions that matter more than you'd expect. These are the questions my colleagues actually ask, plus one or two I wish someone had asked me before I spent money the hard way.

Which Casio calculator should we order for the office?

A lot of people assume all calculators are basically the same. They're not. For most of our office—front desk, sales support, accounting—the Casio HS-4G is what I keep coming back to. It's compact, runs on solar with battery backup, and the keys feel solid for the price. I've ordered dozens of these and haven't had one fail.

But here's the honest part: it's a basic desktop calculator. If your team is doing scientific work or heavy financial modeling, the HS-4G isn't the right tool. I went back and forth between the HS-4G and the Casio FX-991EX for our accounting team last year. The 991EX has more functions, but it's also more expensive—and honestly overkill for invoice math. We chose the HS-4G because it fits what our people actually do. If your team is doing heavier math, don't default to what I chose.

Is the Casio fx-570MS still worth buying in 2025?

Yes, with a big caveat. The fx-570MS has been around for years and it's still in demand for a reason: it's inexpensive, covers a solid range of scientific functions, and it doesn't break. For students doing A-levels or first-year university math, it handles most of what gets thrown at it.

But I've seen the limits firsthand. Our HR team ordered a batch for a training program, assuming any scientific calculator would do. The trainers needed graphical displays for statistics. The fx-570MS doesn't do graphs. We ended up buying graphing calculators anyway, so the original order was wasted money. I still kick myself for not checking the requirement first. Match the calculator to the actual work—don't just order whatever's popular.

How do I connect to an HP printer on our office network?

This is the most common printer question I get, and it's more about procedure than brand. For the HP printers we use, this setup works reliably:

  1. Connect the printer to power and let it boot completely.
  2. Use Ethernet if you can. Why? Wi-Fi on office printers drops connections more often than vendors admit.
  3. Install the official HP driver from HP's site. Third-party “driver updaters” cause more problems than they solve.
  4. If Windows doesn't discover the printer, add it by IP address.
  5. Print a test page before telling the team it's ready.

One thing that tripped us up: paper size settings. We deployed a new printer to a branch office, and the tray defaulted to Letter (8.5 × 11 in). Some overseas documents were formatted for Legal (8.5 × 14 in), and we got clipped prints for a week before someone noticed. Check the default paper settings during setup—it'll save you the headache.

Does a normal office need a resin 3D printer?

I didn't expect to get this question, but it comes up more often than you'd think—usually because someone's manager watched a demo video. Here's the honest answer: for a typical office, no. Resin 3D printers are messy, need proper ventilation, and require maintenance that falls outside normal IT support.

Our design team convinced me to approve one in 2023. I hit “approve” on the purchase order and immediately thought, “Did I just sign up for a headache?” Two weeks later, a resin spill on a conference table confirmed I had. They've since moved it to a workshop area, where it works fine. If your team is doing hands-on prototyping or product design, a resin 3D printer can earn its place. Just budget for the extras: gloves, IPA, a curing station, venting, and PPE. The printer itself is maybe half the real cost.

Why does our printer sound like a cricket?

This sounds ridiculous until it happens in your office. A few years ago, one of our HP printers in the break room started chirping. Someone called it the “cricket printer,” and the nickname stuck. It was literally a cricket that had crawled into the paper tray. We unplugged the printer, opened the paper path, and let it hop out. Fixed.

But that cheap printer was a headache long before the cricket moved in. Its output looked okay for internal memos, but it fell apart on customer-facing material. Standard commercial print quality expects 300 DPI at final size, and the source images we'd prepared looked fine on screen—but the softness was obvious in print. Color fidelity was another issue: our brand colors drifted noticeably from their Pantone references. If you're printing client documents in-house, don't buy the cheapest printer in the catalog. You'll see the difference in every logo.

Should we buy all office tech from a single vendor?

Nobody asks this before they do it, and it's worth asking before you're drowning in invoices. When I first started, we bought from eight different vendors: calculators from one, printers from another, supplies from three more. With 60-80 orders a year, that's a lot of reconciliation time.

In our 2024 vendor consolidation project, we cut down to two main suppliers, and we got back roughly six hours a month in invoicing and coordination time. But consolidation only works if the supplier is solid. One vendor gave us a great price on calculators but couldn't produce a proper invoice—handwritten receipt only. Finance rejected the expense report, and I ate $2,400 from the department budget. I still kick myself for not checking invoicing capability first. Verify that before you consolidate, not after.