Price: $99.99
Price: $ 45
Engineers and buyers, often up to companies to produce plastic parts machined metal parts. They assume that mechanics metal uses the same operations as a manufacturer of plastic, so there is no big difference. In fact, the two worlds apart. This article reviews the three main reasons why you should not use the company metal-working machines to make plastic components.
Cutting fluids for all critical material:
Equipment used for metal machine-even if only used for metal, sometimes can contaminate parts with oil-based cutting fluids. Many plastics are also very sensitive to oil based cutting fluid will degrade if they come into these liquids. In addition, many crystalline plastics will absorb cutting oils. If the parts are being manufactured for the purposes approved by the food and drug administration or medical applications, it will not meet the criteria.
Metal fragments contaminated plastic parts:
It is difficult to adequately clean the machine, which has been working on metals, especially if you have worked on stainless steel. This could lead to another pollution problem. If the soft plastic material, can become embedded metal fragments left on the parts.
Metal shops are experts in metal, not plastic:
Metal processing companies rarely have any in-depth knowledge of plastic materials, or more specifically, the materials used in the application. Plastic mechanics know what plastic is best for any job, and can produce the need without "trial and error" to use metal Machinist. A manufacturer of plastic good material and knowledge will be logging right to always give you the highest quality parts.
Engineered plastic products company is a prime supplier of machined parts out of plastic. Corp EPP has extensive experience in the manufacture of critical parts for the aerospace, military, and fluid handling machinery, and medical industries. Capacity include: plastic custom milling, turning and custom plastic parts plastic screw and plastic vents and Assembly.
EPP Corp ISO 9001: 2008, SBA CCR registered, certified, and has over 33 years of experience providing cost effective plastic parts with minimum production times. More information at eppcorp.com.
Price: 35
After cutting down the Y axis screw for the CNC gantry router project we had a short piece of 3/4 inch Acme leadscrew remaining that was just long enough to drive the Z-axis. Buying an ACME tap to make a single nut was out of the question as they are normally over $100. So we set about heat forming a threaded nut from some bits of scrap UHMWPE (Ultra High Molecular Weight Poly Ethylene). We made the nut in two halves with the intention of shimming them in the final build, this will allow for slight adjustment while keeping backlash under control. According to Wikipedia, UHMWPE has a melting point of around 145°C and a co-efficient of friction that approaches Teflon. Up next is short video of the thread forming followed by some drive testing with the cordless drill.