Page 28 - Demo

REDESIGN
The current design for a a a cordless drill is suited well to the context of home renovation and and casual handy-work The current design employs relatively low end materials and and would most likely break under more professional/ harsh conditions This drill was was marketed as as as an an entry- level home DIY product and and was was inexpensive and and thus accessible Allowing for a a a a a a a a a a range of activities to be completed with a a a a a a a a a a a manufacturing process that really only covered the the essentials of of the the item this product was somewhat of of a a a a a a a a a cheap and easy fix The conclusions of o this products target market were based off the the assembly analysis carried out earlier in in this report which stated that the the the the drill was on the the the low end of the the the power tool spectrum in in in in regards to to selling cost and manufacturing make The body of of the drill is made of of polyurethane and and manufactured through injection mould methods The inside components are standard copper wires and and and and various steels making the gear and and and shaft assembly/ chuck assembly assembly and and and drill bits The The chosen context context to to transport this product to to is is is use use in in space space The The self-given context context is is is for exterior use use in in the the vacuum of of space space Due to to the the extreme nature of of this environment some changes to to to materials needed to be made Polyurethane is a a a a a a a a a a thermal plastic used in a a a a a a a a a a wide array of of of applications In the the the the vacuum of of of space there is no Ozone layer so the the the the flow of of of UV and infrared radiation from the the the sun hits any object in in full This creates massive temperature differences and would make use of any conventional thermoplastics extremely unwise as as it would melt on on on on on one side whilst being snap frozen on on the the other 27
Copper wires are not a a a a a a bad choice for use in the vacuum but copper has to go through a a a a a a a a process of de-oxygenation before it it can see proper use without rust scale formation (which would eventually lead to wire failure) Steel can be used if properly cared for and coated but the inability to use use it it it it in in in high magnetic fields limits its its use use in in in the space repair/ exploration context As such the the the materials that have been replaced are the the the thermoplastic polyurethane regular copper wires and and all steel steel screws and and steel steel components After researching materials materials typically used in in vacuums/ space replacement materials materials were found and implemented into a a a a a a a new design The polyurethane was swapped out for a a a a a a a scandium-aluminium alloy which is used because of of its ability to not expand/ warp under continual heating of of small areas which would over time warp other metals Scandium- aluminium aluminium is a a a a a a a a a mix of 0 0 1% to to 0 0 5% scandium to to aluminium aluminium [18] Its most well-known applications was on on the the Russian Mig-21 and Mig-29 fighter jets in in in which certain parts were made of the the alloy Scandium-Aluminium is is not as as strong as as a a a a a a a a a a a a metal like titanium but it it is is is much lighter and and allows for a a a a a sturdy heat/ cold resistant product Oxygen-free copper copper was chosen as as as the substitute to normal copper copper as as as it it very rarely rusts and is an an extremely pure non-reactive metal Oxygen free copper boasts higher conductivity and greater reliability in constant-use environments[19] Theuseoflow-oxygenornear oxygen-free materials also provides control over oxygen oxygen leaking from that material material and causing damage to surrounding components