Simple Centrifuge
Clean waste vegetable oil (WVO), bio diesel, lube oils, and even hydraulic oil in your garage
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Photo Gallery - This gallery represents the work over several years. Some designs have been replaced and/or updated as time progressed. Most images contain a date stamp visable on the large version. Please note the date when viewing. We are always experimenting with new concepts and designs. If you have any questions about any photo please contact us.
Total photos in gallery 1296 - Latest photo update 2021/12/10 18:48:01
Asterisk(*) indicates new photos in the past 30 days
Adapter 56C to 56J ( 15 )
Algae Recovery ( 42 )
Bacterial fermentation ( 1 )
Balancer Mandrels ( 8 )
Bearing replacement ( 25 )
Botry Culture ( 2 )
Building a gantry ( 16 )
Chestnut Extract ( 9 )
CNC Coolant ( 6 )
Coconut Oil ( 8 )
Construction ( 43 )
Contaminated diesel ( 2 )
Craig's Machine ( 31 )
Cross Drill End Bell ( 10 )
Crude oil ( 5 )
Custom motor shaft ( 23 )
Experimental Motor ( 19 )
Explosion proof motor ( 3 )
Feed Cone ( 29 )
Feed Cone with Fins ( 8 )
Feed Tube ( 3 )
Filter Paper ( 7 )
Ford on WMO ( 2 )
Foundry ( 5 )
Foundry 2 ( 18 )
Gear pump ( 2 )
Grinding fluid ( 19 )
Grinding fluid 2 ( 14 )
Heaters ( 9 )
History ( 11 )
Homemade Diesel ( 7 )
Homemade diesel 2 ( 41 )
Homemade Diesel 3 ( 15 )
Homemade Diesel 4 ( 12 )
How it works ( 3 )
Hydraulic Oil ( 3 )
Keyless Bushing ( 11 )
Lab Centrifuge ( 16 )
Lab Centrifuge 2 ( 18 )
Lapidary Cutting Oil ( 2 )
Lock motor shaft ( 6 )
Magnesol removal ( 6 )
Microwave heater ( 7 )
Misc. Mods ( 4 )
Mitsubishi 4x4 on WMO ( 10 )
New Feed Cone ( 16 )
New Feed Tube ( 7 )
New Rotor 2013 ( 24 )
New rotor design ( 16 )
Oil and Contaminants ( 47 )
Oil Skimmer ( 8 )
Our Shop ( 37 )
Peristaltic Pump ( 32 )
Powder Coating ( 10 )
Renderings ( 8 )
Retrofit rotor for WVOD ( 17 )
Rework Mount ( 10 )
Rotor fins ( 34 )
Rotor Fins One Piece ( 6 )
Seal ( 6 )
Sea Weed ( 4 )
Sediment removal ( 16 )
See thru lid - Building ( 16 )
See thru lid - Testing ( 28 )
Sight Glass ( 6 )
Skim Tube ( 56 )
Skim Tube for VCO ( 8 )
Small Settling Tank ( 14 )
Tanks ( 9 )
Tanks - Complete System ( 13 )
Tap drain ( 10 )
Testing Seal Screws ( 6 )
Tests by fuelfarmer ( 22 )
Turn key machine ( 38 )
Two part rotor ( 30 )
Ultrasonic filter cleaning ( 8 )
Updates ( 26 )
Users Machines ( 34 )
Vacuum pickup ( 3 )
VW on WMO ( 7 )
Water-Oil Seperator ( 7 )
Water trap ( 5 )
Wine Clarification ( 4 )
WVO Heat Tests ( 7 )
WVO Pump ( 6 )
WVO Tests ( 14 )
 Tap drain
Several turnkey machines shipped with undersized drain holes. The original 1/4" pipe is undersized to keep up with the three 3/16" holes in the bowl. The drain needs to be drilled and tapped to 3/8" pipe which will keep up with the draining of the bowl (plus a 30% safety margin). If you have a turnkey machine, please check the drain size and if it's undersized please contact us for repair or follow these simple steps to drill and tap the drain.
Items required to drill and tap the drain. 3/8-18 NTP tap. 37/64 Verify your drain is under sized. It will be about 1/2 Center the drill and get ready to drill.
Items required to drill and tap the drain. 3/8-18 NTP tap. 37/64" drill or 9/16" (we used a 9/16 which is close enough and more common). Optional dead center to keep the tap straight. A drill press. Verify your drain is under sized. It will be about 1/2" across the threads. If the thread is the same size and the lid, it's under sized and will need to be re-tapped. Center the drill and get ready to drill.
Drill the drain to a depth of about 1 Here you can see the drain re-drilled. This is the setup for the tap. You will use the drill press quill and dead center to keep the tap straight while tapping.
Drill the drain to a depth of about 1". You'll feel it break through to the other side. Use lubricant like kerosene or WD-40. Here you can see the drain re-drilled. This is the setup for the tap. You will use the drill press quill and dead center to keep the tap straight while tapping.
Use the quill to provide stability while tapping. You only need enough down pressure to keep the dead center in the tap. The tap wrench is not shown. You can use a wrench with these larger taps. Use lubricate. Were using tapping fluid in this photo but kerosene or WD-40 will be suitable alternatives. Tap to about 3/4 of the tap length (depth shown). Lift the quill and remove the tap. This is the finished drain, enlarged to 3/8
Use the quill to provide stability while tapping. You only need enough down pressure to keep the dead center in the tap. The tap wrench is not shown. You can use a wrench with these larger taps. Use lubricate. Were using tapping fluid in this photo but kerosene or WD-40 will be suitable alternatives. Tap to about 3/4 of the tap length (depth shown). Lift the quill and remove the tap. This is the finished drain, enlarged to 3/8" pipe thread.
This photo shows the 1/4    
This photo shows the 1/4" pipe (left) beside the 3/8" pipe (right).    
Numeric Control, LLC
PO Box 916
Morton, WA 98356