jmt polymer 80 machining instructions
DESCRIPTION
JMT Polymer 80 Machining InstructionsTRANSCRIPT
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POLYMER 80MACHINING
INSTRUCTIONS
2013 James Madison Tactical, LLC
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your kit includes:
JMT POLYMER 80 LOWER RECEIVER
JMT JIG RIGHT PLATE
JMT JIG LEFT PLATE
JMT JIG TOP PLATE
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drilling:
0.376
0.156
0.156
0.376
0.156
0.156
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snap the lower receiver in to the jig right plate.
snap the jig left plate on to the lower receiver and jig right plate as shown.
leave the jig top plate off for the drilling operation.
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1.345
(1.750)
R0.188 TYP
0.630
cut one:
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cut two:
(2.562)
2.144
1.250
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remove the jig top plate from the assembly.
machine the pocket shown in the reference drawing using the 3/8" dia. end mill in the same manor as before, stepping as you go.
be mindful of the location of the rear of the pocket, this is the most critical aspect of the machining operation, there is no guide in the jig to prevent cutting too far.
clear all chips and debris from the assembly.
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cut three:
0.091
(0.662)(0.680)
0.818
(R0.156)
0.368