If your question is what is it, then it is a small pen shaped device with a single point that starts really small(pin tip size) and gets progressively thicker. It is used to clean the orifice of gas appliance pilot assemblies. Costs from 50-75 depending on where you get it. There are other variations of the same device which some are smaller and much cheaper and you can get whole kits for $100+ but includes every size for every orifice.
Astro Mfg of Fort Lauderdale, Fl. frensen@aol.com or phone 954-772+8928, ask for Bob.
The helix angle of reamer is negative because to make the reamer more regid so that the reamer can withstand the vibration during reaming
A reamer is a tool, not a material. The melting point would depend on what material the reamer is made of.
Robert Reamer died in 1938.
Robert Reamer was born in 1873.
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Cory Reamer was born on 1987-05-06.
Keith Reamer was born in 1960, in New Jersey, USA.
A reamer concentrically enlarges a hole in a thin-ish piece of material.
A reamer is a form of cutting tool that may be used by hand or in a machine such as a drill press.
reamer
The reamer will be dull soon. It shurely happens after ~ 3 reverse turns due to friction of metal chips (back angle of reamer's blade does not cut). It is very difficult to physically destroy an reamer by such way but there are 3 problems: 1. Dull reamer will "scrap" instead of "cut". Surface will be more rough and hole will be more inaccurate (bad roundness). 2. You HAVE to re-gring dull reamer to sharp its blades. 3. Re-grinded reamer will have smaller diameter - reamer will be inaccurate and inappropriate soon. Example: Typical diameter of new (metric) 10H8(+0,022) reamer is 10(+0,01;+0,015). Diameter of re-grinded reamer will be 10(+0,005;+0,01). After next re-grinding reamer will be 10+0,005 , next time 9,995+0,005, next time 9,99+0,005, 9,985+0,005 and so on. Reamer marked 10H8 with outer diameter 9,99+0,005 is inappropriate(9,995 is _smaller_ than 10. IT IS VERY BAD due to possible fit error).