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MICROMOTOR & CONTROLLER SYSTEM "G5" accommodates 110/130 volt power supply (220 volt unit is also available) and features on/off switch, a speed control dial (for speeds up to 28,000 rpm), forward and reverse rotation switch, a foot speed control and an overload indicator. Output voltage: DC3-DC30V continuously variable.

Ceramic Deburring Knives improve safety in your plastic and die cast manufacturing environment. The ceramic blade will stay perfectly sharp when working on hard plastic, glass filled nylons, ABS, melamine's, aluminum/zinc die cast parts and brass castings.

DieProfiler PBAX-3500 made in the USA, is the best & most durable filing machine in the market place today, "no-kidding"! Model PBAX-3500 features .0 to .235 inch stroke adjustment, accommodates up to 3/16 shank diameter tooling and is made for use with Foredom or other, similar flexible shaft drive motors.

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Boride Abrasive Selection Guide

How to select the right polishing stones for finishing various types of metal surfaces.  

To determine what type of our BORIDE Stones can and should be used for most efficient stock removal and finish, the polisher must evaluate the following criteria's:

a) What type of material needs to be polished (Steel, Brass or Aluminum) and how hard is it? (to select the stones best suited for and number of different materials see "First Choice and Options".  

  1. Is it in the 22 to 38 RC range?
  2. Or is it more in the 39 to 55 RC range and more?

b) What type of machined surface does it have?

  1. The machined surface is an EDM surface finish.
  2. Milling machine surface finish.
  3. Copy milling machined surface finish
  4. Surface from a Casting 

c) How will the stones be used?  

  1. By hand (use more the softer stone types)
  2. By reciprocating machine (DieProfiler, AirLappers, etc.)  use harder type stones. 
  3. By ultrasonic polishing machine (use very hard stones: AM-8 or ceramic stones)  

First Choice and/or Options:

Please note: We assume here, that in most instances, mold steel qualities such us P13, H-20 including various stainless steel types are being used/polished.   

  1. EDM finish with steel type of 22 to 38 RC hardness, try first AS-9. If not available, try AM-8, AO or AM-K.
  2. EDM finish on 38 to 62 RC type steel, try first CS-HD. If not available try AS-9,   AM-8, AO or AM-K.
  3. Milling machined finish with steel type of 22 to 38 RC hardness, try first AO. If not available, try AM-2, Die Stone or CS-M.  
  4. Milling machined finish with steel type of 38 to 62 RC hardness, try first CS-HD. If not available use AO, CS-M, AM-2, Die Stone. 
  5. For Stainless Steel, your first choice should be T-2.  If not availble use AB, AS-9, AM-8, CS-M.
  6. For Aluminum use first T-4.  If not avalable use AM-K or AS-H (start with 400 grit, as this is a fast cutting stone)
  7. For Steel Casting use: CS-M, CS-HD and/or AB

Sequence of Grit and the type of stone recommended for polishing P20 or H13

EDM Surface finish is:                                Fine                 Medium              Coarse

Start with AS-9, AM-8 or CS-HD           320 or 400 Grit        220 Grit          150/180 Grit

Proceed to AS-9                                        600 Grit              400 Grit         320 & 400 Grit

Finish with AM-2                                        600 Grit              600 Grit            600 Grit         

"Mill" Machined Surface is:                        Fine                  Medium             Coarse

Start with AO, AM-2, CS-M or AM-K            320 Grit                220 Grit          100  Grit

Finish with AM-2                                      400 & 600            320 &  600      220 & 320        

                                                                                                                   400 & 600

Last Stones/Grit before Diamond Finish:                                                       

Use AM-2                                                    900 Grit               900 Grit          900 Grit

Next use Diamond compound:             15 or 9 micron            15 or 9           15 or  9   

Notes: The stone types that are listed provide the most effective sequence of finishing.

For example, if the AS-9 type stones is listed first it means that the AS-9 type stone is "most suited" for the specific application. However, if the AS-9 stone is not available then use the next stone type that is listed as an option (AM-8, AO and so.... on....)!

  1. NOTE: You may have developed your own polishing steps and/or procedure. Naturally, if this is the case the above information may not apply to you.
  2. For experienced polishers going on to a 900 stone finish may be considered as  "time consuming". Usually, a "good" 600 stone finish may suffice prior to diamond polishing.                                                                                                       

Presented by Heinz Gfroerer for & MDT, Aug.2006.