Home / Tools: buy, rent, borrow, or take a class
Tools: buy, rent, borrow, or take a class
Checked 2026-10-12. Build site: Denton, TX.
Main store pages: Harbor Freight MIG 140; Weldfabulous C25 cylinder; Tarrant County Makerspace; Sunbelt Rentals.
The quality bar for this group
- Buy new tools with a maker warranty. Used, open-box, and refurbished tools are not picks.
- MIG means metal inert gas welding. The welder must handle 3/16 in steel and use shielding gas or flux-core wire.
- Structural welds on the frame, tongue, spring hangers, and coupler plate get an experienced welder’s work and inspection.
- A helmet must be auto-darkening and ANSI Z87.1 eye-protection rated. Stands must be a matched 3-ton pair and show ASME PASE marking.
- Cheap protection risks an eye injury, a fire, or a dropped trailer. Cheap gas gear risks a porous, weak weld.
Every line
| Line | List pick, 2026-10-11 | Options checked | Pick | Why this one |
|---|---|---|---|---|
| Welder — Titanium MIG 140 | $499.99, Harbor Freight | $42/day, $168/week, $504/4 weeks, Home Depot Ellsworth; mobile welder rate: call ($100–250/hour forum range, not a source); Red-D-Arc quote only | $499.99, Harbor Freight Denton pickup | Maker lists 24 gauge–5/16 in steel. Buy is $4.01 less than the published four-week rental, before eight weekends make rental much higher. |
| MIG setup — Regulator, .030 wire, tips and C25 cylinder: examples; current local total: no source found. | $0, unsourced | $64.98 regulator, Northern Tool; $305.99 full 80 ft³ C25, Weldfabulous; flux-core avoids gas but gives up cleaner indoor welds | $438.95 online; shipping not shown | C25 is 75% argon/25% carbon dioxide. Buy: regulator $64.98 + 11 lb .030 ER70S-6 wire $39.99 + tips $12.99 + nozzle gel $15.00 + full cylinder $305.99. |
| Helmet, gloves, jacket, clamps — Basic set | $95.00, Harbor Freight | $44.99 helmet, Harbor Freight; $235 better set, Harbor Freight | $95.00, Harbor Freight Denton pickup | Keep the budget set only after confirming its ANSI Z87.1 marking. Do not weld without full coverage. |
| Grinder, wheels, flap discs — Basic kit | $75.00, Harbor Freight | $160 better kit, Harbor Freight; borrow only if guard and wheel rating match | $75.00, Harbor Freight Denton pickup | A grinder prepares weld edges and removes sharp steel. New wheels avoid a burst-wheel injury. |
| Metal saw — Bauer 14 in chop saw | $159.99, Harbor Freight | $159.99 Bauer, Harbor Freight; Sunbelt 14 in saw, quote requires ZIP | $159.99, Harbor Freight Denton pickup | Sunbelt confirms the correct 14 in metal saw but did not expose Denton pricing. A new saw makes repeatable frame cuts; inspect each abrasive wheel. |
| Metal drill/cut kit — Jigsaw, snips, bits, deburrer | $115.00, Harbor Freight | $245 better kit, Harbor Freight; borrow a drill press for precise holes | $115.00, Harbor Freight Denton pickup | These make non-structural holes and skin cuts. Deburring removes cut edges that can cut hands and wires. |
| Woodwork kit — Drill/driver and circular saw | $179.00, Home Depot | $399 better kit, Home Depot; rent table saw only for sheet cuts | $179.00, Home Depot Denton pickup | Used through floor, cabinets, and trim. Buying avoids repeated rentals and gives warranty support. |
| Riveting/layout/table — Hand riveter, caulk/layout kit | $130.00, Harbor Freight | $320 better kit, Harbor Freight; borrow a work table | $130.00, Harbor Freight Denton pickup | Hand riveting and layout continue through skin work. A stable table reduces panel and hand injury risk. |
| PEX and electrical — PEX crimper/gauge + electrical kit | $170.00, Home Depot | $360 better kit, Home Depot; borrow a PEX crimper after a test joint | $170.00, Home Depot Denton pickup | PEX is cross-linked polyethylene water pipe. Correct crimps and a meter prevent leaks and electrical faults. |
| Jack, stands, safety — 3-ton kit, chocks and PPE | $260.00, Harbor Freight | $79.99 stands, Harbor Freight; $480 better kit | $260.00, Harbor Freight Denton pickup | Keep this complete allowance. The listing shows ASME PASE compliance for the stands. Never work under a trailer on a jack alone. |
Used parts
None found.
If Nathan changes the design
| Change | Price | Saves about | What he gives up |
|---|---|---|---|
| Use flux-core wire instead of C25 gas | Wire price not sourced | Cylinder and regulator, about $370.97 | More spatter and less clean welds; this is not the pick for the trailer frame. |
What stayed and why
- All original buy lines stay. The tools remain needed across separate phases, so day rental is not a safe cost comparison.
- The MIG setup is now a real buy total. The cylinder listing is shipped; local Airgas and Matheson Denton purchase, lease, exchange, and fill prices were not shown.
- Rent rates were not published for Denton. Do not reserve without a written weekly and four-week quote.
Rent these, not in the list
| Tool | Where | Day / week | Use |
|---|---|---|---|
| Table saw | Home Depot Ellsworth #2408 | $59/day; $236/week; $708/4 weeks | One-off cabinet and blocking cuts. These are Ellsworth, not Denton, rates. |
| Router | Home Depot Canada router kit | Rate needs local store selection | Borrow or rent only for a planned cabinet edge profile. No US/Denton rate found. |
| Drill press | Home Depot / Sunbelt / United | No source found | Borrow for precise small holes. No published local rental listing found. |
| Rolling scaffold or 10 ft work platform | Home Depot Lansdowne #2579 | $84/day; $210/week; $525/4 weeks | Roof and skin work with a helper. These are Lansdowne, not Denton, rates. |
| MIG welder | Home Depot Ellsworth #2408 | $42/day; $168/week; $504/4 weeks | Correct 3/16 in class, but buy wins over four weeks. |
| Abrasive 14 in chop saw | Sunbelt Rentals | Rate needs ZIP on the site | Correct metal-cutting tool. Ask Denton branch for its day, week, and four-week quote. |
| Trailer dolly | Local rental or borrow | No source found | Move the trailer only on level ground. |
Training and rental math
| Option | Price seen | What it can do |
|---|---|---|
| Tarrant County Makerspace MIG class | $249 | Practice and training; not the 18 ft frame. |
| Tarrant County Makerspace membership | $38/month | Small-part practice and metal-shop access. |
| Dallas Makerspace, Carrollton | $72/month | Metal-shop access after required training; it cannot take the 18 ft frame. |
| Welder rental break-even | $499.99 ÷ $168/week = 2.98 weeks | Four weeks: $504; eight weeks: $1,344. Buy wins by $4.01 at four weeks and far more at eight. |
| Chop-saw rental break-even | Cannot calculate: Sunbelt rate needs ZIP | Do not substitute a wood miter saw. Get the Denton 14 in abrasive-saw quote first. |
| Scaffold rental break-even | No buy line exists; $210/week | Four weeks: $525 listed; eight weeks: request a quote. Rent for the short roof/skin phase rather than buy. |
Frame rule
The frame cannot go to a makerspace. It is 18 ft long and must be welded on stands at the house. Use a class for practice. Have a professional perform or inspect every structural weld.
What Claude must check
- Get Denton quotes for the Sunbelt 14 in abrasive chop saw, router, drill press, and eight-week scaffold rate. Sunbelt and United require a ZIP or quote.
- Get Airgas Denton’s exact 80 ft³ C25 purchase, annual lease, exchange, and fill price. The store and product pages hide the price.
- Confirm the chosen helmet’s ANSI Z87.1 marking and the parents’ outlet voltage before purchase.