Video summary
All About Metal Cutting Bandsaws - Tips, Tricks, Repairs
Main summary
Key takeaways
Product reviewed
An older used Evolution-style metal-cutting hydraulic band saw for cutting metal—specifically the host’s JET HVBS-7MW (7” x 12” class) water-cooled metal bandsaw. It’s used for square/90° and 45° cuts on items like tube, angle iron, and small stock.
What it does / main features mentioned
Water-cooled cutting system
- Coolant runs via a pump and drains back into a tank.
- Cuts are “super quiet,” with little to no mess.
- Coolant can drip/wet the work; if adjusted incorrectly it can fling water, but the host says it’s manageable.
- Drain/catch flow described:
- blade area drains into a tray
- through a strainer/colander
- into a tank
- the pump recirculates coolant back to the blade.
Hydraulic downfeed
- A hydraulic cylinder lowers the blade slowly, controlled by:
- a lever/on-off style control (hydraulics direction)
- a wheel/valve to set descent speed
- At the bottom of the stroke, it shuts itself off using a switch/button.
- The host notes it can run without coolant (coolant has a separate switch), but they prefer coolant.
Cut quality & accuracy
- Emphasis on high-quality square cuts.
- Can make fine incremental cuts on smaller stock/tube pieces.
- Example described: trimming an approximately 1/8” thick tube piece by “chucking it back in” and taking off about 1/8” at a time.
- Host claims this is something they “can’t do” as effectively with abrasive chop saws.
Cutting capacity / class
- Described as a 7 by 12 unit (tied to maximum cutting area).
Blade choice
- Working blade described as 93” long with 8½ TPI (teeth per inch).
- Blade is used for cutting, and the host also mentions chip-out/cleaning behavior tied to tooth spacing variation.
- The host ordered a second spare blade (also 93” and 8½ TPI) to avoid downtime if the working blade snaps.
Coolant / cutting fluid used
- The host replaced/avoided the previous owner’s coolant/oil-water mixture that looked like “curdled milk.”
- Coolant used: Master Fluid Solutions Trim SC520 (blue liquid), used concentrated:
- Estimated mix: about 2 cups per a couple gallons
- Reported results:
- No rust after months of leftover drips/liquid residue around the area.
- When topping off, the host used distilled water to reduce rust/contaminants.
- Mentions evaporation over time can cause pump/level changes.
User experience vs. abrasive chop saws (main comparison)
Chop saw (abrasive) complaints
- Very loud
- Throws dust everywhere
- Cuts take a long time
- Requires extra cleanup (sweeping/cleaning after each cut)
- A diamond blade upgrade on the chop saw helped slightly but still left the saw loud, slow, and messy.
Band saw benefits
- Much quieter (less reliance on ear protection).
- Much less cleanup (only minor dribble/fling if coolant is mis-set).
- Improved workflow:
- less mental friction to cut frequently because sparks/dust management is reduced
- improved efficiency and accuracy
- Supports repeat work:
- For multiple identical tubes, the host suggests clamping/holding and cutting several at once—claiming you can gang-cut multiple pieces simultaneously.
Practical accessories / workholding mentioned
- Bora Portamate 3-in-1 stands
- Roller options for moving stock in/out
- Stationary position to prevent movement
- Helps support long pieces so they don’t bind or hang off the saw
- Magnetic tool hooks
- Keeps frequently used tools nearby
- Specifically mentioned: 3/4” wrench and 9/16” wrench
- Sliding square angle checking
- Stored near the machine for quick 45° setup/verification
Repairs & maintenance notes (unique problems + solutions)
Problem encountered
- The blade was “popping out” and coming down unexpectedly.
- Diagnosis: a locked-up bearing
- blade was sliding on the bearing instead of the bearing rolling properly.
Replacement parts strategy
- The original center shaft assembly was listed at ~$53, but was backordered with no ETA.
- The host identified the bearings inside as 608 ZZ (“skateboard wheel bearings”).
- Fix:
- Bought a 20-pack for $10 from Amazon (~$0.50 each)
- Took longer than expected due to unfamiliar installation, but after replacement the blade reportedly hasn’t fallen off since.
- Additional spares:
- kept 18 spare bearings on hand afterward.
Other maintenance
- Changed cutting fluid (worked well).
- Current blade is “still okay,” but a spare blade is ready in case of snapping mid-project.
Pros (as stated)
- Very quiet vs. abrasive chop saws
- Water cooled system reduces mess and cleanup
- Better workflow/efficiency and less hesitation to cut often
- High cut quality, especially square cuts and 45°/90° angles
- More precise than chop saws for certain tasks (example: incremental/chucking-back trimming)
- Repeat cutting can be faster with the right setup/clamping approach
- Spare bearings are cheap and easy to source once identified
Cons / limitations mentioned
- New units cost more
- host estimates $2,000–$3,000 new with water cooling
- non-water-cooled versions: about $1,000 (host’s estimate)
- Used units may arrive with unknown/dirty coolant, requiring replacement
- Incorrect coolant adjustment can cause water flinging
- Some older machine assemblies/parts (like the full center shaft assembly) can be hard to source (backordered), though bearing-level parts are cheap
Verdict / overall recommendation
The reviewer strongly recommends a water-cooled metal-cutting hydraulic band saw, especially for frequent 90° and 45° metal cutting. They consider it a worthwhile investment because it’s quieter, cleaner, more accurate, and more efficient than an abrasive chop saw—plus maintenance can be DIY-friendly (notably via low-cost 608 ZZ bearings). If buying new, it’s more expensive than chop saw upgrades, but the host suggests buying used as a good path.
Unique points mentioned (consolidated list)
- Metal-cutting band saw dramatically changed the shop workflow.
- Versus abrasive chop saws: quieter, less dust/sparks, faster workflow, less cleanup.
- Diamond blade upgrade on chop saw helped slightly, but didn’t fix noise/time/cleanup.
- Evolution-style chop saw upgrade mentioned as an intermediate step.
- Used acquisition had uncertain age/heavy use but still worked well.
- Identified model: JET HVBS-7MW, 7” x 12” class.
- Hydraulic downfeed with switch-off at the bottom of the stroke.
- Water cooling benefit: minimal mess; minor dribble only (but possible water fling if misadjusted).
- Coolant draining described: tip tube/work toward tray; coolant returns via pump loop.
- Prior coolant was dirty/nasty; host replaced it.
- Uses Master Fluid Solutions Trim SC520 (concentrated).
- Claim: no rust after months with leftover coolant.
- Example of incremental ~1/8” sections; host says abrasive chop saws can’t do this similarly.
- Typical materials: small square stock, angle iron, tube.
- Uses Bora Portamate 3-in-1 stands for support/rolling/stationary setup.
- Ordered spare blade (93” 8½ TPI) to prevent downtime for customer projects.
- Repair: blade popping out due to locked bearing.
- Repair method: replaced bearing type 608 ZZ skateboard-wheel bearings.
- Cost-effective parts: 20-pack for $10 (~$0.50 each) avoiding a $53 backordered assembly.
- Added magnetic storage for tools/wrenches.
- Inspection cover shows pump/drain path (tray → strainer → tank → pump).
- Topping off with distilled water to reduce contaminants and rust.
- Hydraulic speed adjustment via wheel; recommends very slow descent depending on metal thickness.
- Repeat cuts: can gang multiple identical tubes at once (claimed/demoed).
- Final recommendation: band saw is a good investment for frequent metal cutting (especially 45°/90°); buy used if possible.
Speakers / views
Only one main speaker is present in the subtitles; no distinct secondary speakers are delivering different viewpoints.