25 x 25 Dual Leadscrew MachineA simple, solid and inexpensive machine that was designed to give the largest cutting area for the lowest cost. Open Front Machine with Bed and Stand  Basic CNC Machine  Closed Front Machine with Bed and Stand  Machine is made of standard sized lumber (1x4, 2x4, 2x6, etc.)  Machine swings down for storage The plans include detailed step by step directions with dimensioned drawings of all parts. Full scale templates of many components are included. This machine is built with stock sized boards (1x4, 2x4 etc.) that are simply cut to length and drilled. The leadscrews can range from low cost hardware store rod to precision Acme. Directions for these options are included. The machine has a cutting area of 25 x 25 x 6 inches, and is designed to use a trim router to its potential. Design elements include: Build with a minimum of tools
Parts are designed to be simple to construct. They are cross cut from standard sized lumber and then drilled. A power miter or chop-saw will cut parts quickly and cleanly. The components were designed on a 1/16 inch grid, and parts were arranged so the measurements would be simple. The measures are in fractions of inches, not decimal inches; carpenter's measuring tools will serve well. Cut layouts for the 1x4 and 2x4 boards are included, so the stock can be cross-cut efficiently with a minimum of waste. Full scale paper templates for a number of the parts are included. The hole centers can be punch-marked through the templates; this greatly simplifies the layout process. The plans also include directions for a basic version of the machine that can be used alone with no table bed or stand. This unit can sit directly on top of the stock, so it is capable of cutting any sized stock including floors. Also included are directions for a stand, which is made of 1x4 boards. The stand permits the machine to be swung down, and rolled away for storage. ................
The speeds range from 30 inches per minute with hardware store threaded
rod, to 200+ ipm with multi-start Acme leadscrews.The prototype machines used the Xylotex and HobbyCNC steppers and drives with torque ranges from 269 to 425 oz.in. These packages range in price from $250 to $600. The All Thread machine, excluding the drives, steppers and power supply, will cost around $300. The home center components for the machine cost around $200. The bearings that ride the steel pipe rails can be 608 skate bearings which are available from sports stores. Online suppliers for these, and the bearings used with the leadscrews, are included. All bearings are standard easily found sizes; their total price is around $50 depending on the size and quality. The cost of the leadscrews and nuts will range from less than $20 total with all axes using hardware store All Thread, to over $50 for each axis, when precision Acme is used. The leadscrews can be changed after the machine is built, so the machine can initially be built inexpensively, and later be upgraded as need and budget warrant. The machine uses 3 pulleys and a timing belt. These cost ~$50. Suppliers for these non-hardware store parts, with detailed descriptions, are included. ................
This 25 x 25 machine was designed to be as inexpensive and simple as
possible while efficiently using standard 36 inch leadscrews.
These considerations limited the size, but the machine can be enlarged. However, the systems in this machine are not as robust as those in the 24x48 rack/leadscrew machine, which was designed to cut more aggressively.................
This machine uses USA home center parts; therefore, it is sized in
Imperial units. Here is a pdf page that lists the metric sizes of the home center parts. The page also includes a tool list. Table of Contents of the plans. (pdf file) These plans do not include directions
for the software and electronics.
This information is covered by the recommended software and stepper suppliers.
These plans do give directions for deriving the Step per Unit values needed to configure the software. The machines were all designed to use the stepper and drive systems from Xylotex and HobbyCNC. The recommended software is Mach3 or TurboCNC. Other software, drive and motor suppliers can be used. The above vendors work with the Do It Yourself market, and supply documentation and help forums for their products. Shipping details are given on the Order Page; use the above link.
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| 25x25 Plan Book | Price | Ship to - Via | Shipping Fee | Total | Buy w/ PayPal |
25x25 Also includes the 13x13 |
$35 | USA - Priority Mail Canada - First Class International Priority Mail |
FREE $5.75 |
$35 $40.75 |
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