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Mirror Grinding Machines

Mirror Grinding Machines
AS IS pointed out in "ATM" (p. 160) the telescope maker may use a machine for his glass grinding, or he may use his hands. Either method is satisfactory. Many, however, actually enjoy the fun of cooking up a machine, also of watching it work while they lean back and smoke. From the depths of the drawer in which things someday to be published are kept, we draw forth a group of accumulated letters, with photographs, describing grinding machines made by our readers.

Figure 1 shows a machine; made by Loyd A. Magruder, 800 Ashman St., Sault Ste. Marie, Mich. It has direct gear drives and is of all-iron construction, made, as Magruder points out, largely of junk and with very few tools. The stand consists of two old auto flywheels bolted to legs sawed from old auto frames. The oscillating cross member is driven from two crank arms, one of which shows in profile. The rest is a matter of gearing. Possibly, as someone has pointed out, the bevel gears and pinions could be backed up more closely with bearings, to get away from flexure and chatter, yet the actual forces involved in working a small mirror are rather low and the proof of the pudding is that this machine has been a success.

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Mirror Grinding Machines
  • Stock: In Stock
  • SKU: 17-04C-054
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Rs.171.99

 

 

 

 

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