2x72 belt grinder frame

What is the lower horizontal tube (frame member B) for? So I cut up a piece of 1/4 inch plate steel, and mounted everything to that and all is well now. the other two go in the front of the grinder. (Link to his build & plans) I modified some things to make it work for me. Regards,Dan, Thanks, Dan. The tracking pillar can then rest flat against the right wall of the 2" vertical receiver. Do you mind telling me how much the grinder cost without those Items? People just quench the steel in motor oil and call it "Temper"Now my blacksmith claims that it is not necessary to run in through the oven all over again, after the "tempering" he's doneWhat do you think I should do?P.S. I am using a treadmill motor that I turned a bushing for that is reverse threaded and turns the shaft into a 3/4 inch shaft. Will this be an issue with tracking or can this fixed with shimming the wheels? I plan to order the wheels from Oregon. A 4 pole motor, I would set the max frequency to 120 Hz. This provides some sliding action but limits the slop. Hi Danny,Correct. The spring I used was 3/4" diameter x 4" and compresses about an inch with a 30 pound load. Thanks in advance for the help.Ed, Hi Ed, I used 1/4" flat head bolts and countersunk them from the bottom side. I ask because I have a few tachometers that use 8-15vdc. More often it's the motor orientation or the spring tension is lower than ideal.Cheers,Dan. Can I send ya a few bucks? This will keep the outer nuts from working loose under vibration. Since its a 1 and a half inch square tube that goes in a 2'' vertical square tube, that leaves a lot of space which cause my pillar to lean forward when pressure is apply. Great job.I do have one question. For many these features are not important and the KBAC is the simplest way to go. Okay, how do you hook the motor up to it? "If the belt is moving laterally, there are a couple of things to check. With a rubber faced contact wheel this is less of an issue as it has some "give. Thanks. Luckily the outside diameter of the bushing is a press fit into the inside of the wheel. When I mount the motor, do the 1/4" bolts go all the way through the 1/4" plate or are they welded to the top of the plate? If you have any more questions, just let us know.Dan, Hi dan,I live in Australia and am having issues finding steel in the sizes you mention. Hi Rick,I recommended a 3600 RPM motor to save costs on the drive wheel. Excellent. I take it off frequently so the separate tool arm really speeds things up. Looking for any help u might be able to offer!ThanksJ from Montana, Hi J,Can you take a photo of the line (looking at the belt from the front of the grinder? on Step 1, Answer Yet if I run it with out the tracking wheel & tension the belt tracks perfectly. Also, if I'm buying the spring from a shop, what do I tell them? 1800 RPM motors are better suited to 5 or 6" drive wheels, whereas 3600 RPM motors are good with a 4" drive wheel. The fan motor will be okay, however not as ideal as a TEFC motor. My question is what size drive wheel do you think I should get for a build like this. Regards,Dan, HiI know this is totally unrelated to the post, so I'd like to apologize firstSo while I was working on a Tanto recently, my Blacksmith quenched the blade in Motor Oil. You have two, A and B as labeled in the drawing. The belt should make a "toooong" sound like a bass guitar string when plucked. There will be approximately 0.063" all around the 1.5" pieces when they are in place. Hi Dan,It's been good reading all your write-ups on diy tool creation - appreciate the time taken to document all these steps.Quick question if you have time: When replacing the castor bearing with a shim including a keyway, was it just a case of using the correct internal diameter pipe to fit the drive shaft and then cutting a notch to allow the driveshaft key?Did you also drill a hole for a keyway screw or was that not required?Thanks,Daz. Square tubing 2X2 Inches And 4 mm thick 3 pcs 13 inches long one 5 inches long and 1 4 inches long. American Surplus has TECO vfd's for about $150. Hi, I used some 22 mm momentary pushbuttons like these at Amazon.com for the Start and Stop. This created a fairly tight fit. In your photo of the inside of your enclosure, what is the small white block in the lower left corner? If the belt is a little loose, it doesn't always want to stay on the ridge of of the tracking wheel. That is: 2" - (0.1875" x 2)2" - 0.375" = 1.625". The other is the belt moving a out 1mm left and right whilst running I think this is maybe tension or misalignment do I have any advice thank you in advance. From front shock of motorcycle springs, to storm door chain spring to the spring from the back of an office chair. I did a retrofit lever that clamps on here. You can also find the details on Drive Parts Direct, at the Toothed Belts. Ideal for knife making and general fabrication. 4 years ago, http://dcknives.blogspot.ca/p/2-x-72-belt-grinder.html?m=1 very simlare build has everything you need the cominde 2 diys are nice. Arguably the best selling, best quality, best value for money & most popular grinder on the market with an unparalleled range of Also I am laid off from work right now. I didn't use hollow structural steel for the body, I used 1/4 inch wall 6061-T6 aluminum hollow square for both the rigid part and the slidey parts. Try adjusting the position of the motor. Did you have a problem with that? Note the bottom of the tracking pillar has a welded flat. Take a look on YouTube for 'alaskabearhawk'. Great write up and layout. I cut strips about 1" and lubricated with graphite. I made a grinder from your blue print. Of course if you can get your hands on some steel to test the fit it out it would be best. I assumed that it would be a receiver for the work rest, but apparently not, since you just bolted that to the bottom of the platen tube, which makes sense. Personal choice only given the circumstances. I am trying to figure out a way to make it easier to push the tension arm down. Thank you for the response. (These guys were incredible) They cut all of my parts to size for me and sold it to me at a great price, The price for the same stuff at online metals was around 235. See more ideas about belt grinder, grinder, knife grinder. Same bearings since in 2014. For the FWD/REV I used a generic automotive rocker switch. Place the Metal like this….. and Weld it in to place Each Piece is 13 inches long Square tubing 2X2 And 4mm thick. I can post it over on the Gallery of Builds. use a 4 inch Square tubing Cut it in a Angle, Make two holes on each side. I use it for my adjustable tool rest. Can be used for knife making, fabrication, woodworking, metalworking, tool sharpening, making tools, and … Use a nylon locking nut or two nuts that are locked together against each other. 10 months ago. If your vertical receiver is not perfectly square on the Z axis you can "tweak" this design with the plastic shims.It's really a set and forget thing. tube?Thanks! I am a novice welder and the front top tube is about 1/8 of an inch off from the back. I haven't welded nuts yet. on Step 9. The retrofit version is at https://dcknives.blogspot.com/p/bg-272-belt-release-lever.htmlBest of luck!Dan, Thanks Dan for generously sharing with us these info, Yes, the bushing is 7/8" inside diameter which is a match for the motor shaft. Don't you need 2" wide wheels to match the 2" wide belt? Hi Paul, I do love to engineer stuff and the sense of satisfaction that comes with making a truly useful tool is second to none. Also, I bought a Bench Grinder with 2800RPMCan you suggest the Drive wheel size to attach on that? The wall thickness is important as you will need to drill and tap for a 1/4" bolt to hold the platen at whatever angle you set. If I mount the motor using 1/4 bolts as indicated wont the heads of the bolts stick out the bottom of the plate and make the bottom not sit flat on the table?Also is there a way to make absolutely sure you have all the wheels aligned to make the tracking work? I based the design on Dan Comeau's build. I'm a little unsure why you built the frame with the two square tube horizontal members on the frame. How much would you charge for this exact setup? Dan, Mr I am not clarified with belt tension adjustment mechanism.plz let me know I am interested in building it as my project. However, as it's only acting as a clamp to lock the platen, then 3/16" will work fine. FREE Shipping by Amazon. A usable knife would be in the Rockwell C 53 to 58 range. I used an old motor from a Harbor Freight table saw, and made a 5.1 inch wooden drive wheel. Connecting a drive wheel to the motor is a whole other issue. If I weld them on the heads will make the motor sit above the plate. Most belt issues are due to tension. There are soooo many motors out there. The keyway is required to lock the wheel to the shaft, so I had to broach the inside of the shim.Dan. A KBAC will certainly save you time; maybe a break-even in terms of money. Hi Trent,Yes it's important to use the 0.188" wall or the 1-1/2" HSS won't go in. Hi Eloi,When the 2" tubing has a 0.188" wall, the total gap will be 0.125". For the latter, you also want to make sure the surface finish of your other machining processes is all that it can be. However, that bench grinder with variable speed would make an excellent buffer or honing machine. Drive wheels are bored to fit these common shaft sizes. 50mmx50mmx4mm box steel Comes with whats in first photo . Question Hi Dan,It's been great reading your posts on diy tools etc.Can you offer any more detail on the step to replace the castor bearing with a shim and cut a keyway? I bought the motor and controller from the motor company, but basically, it's a three phase 1.5hp 2800 rpm motor, and a 1.5hp VFD with optional external control. However, I have a little doubt regarding the Tracking Pillar - your drawings don't show exactly where the square cuts should be when assembling with the hinge - should it be covered by the longest face of the hinge or should it be exposed from the hole side?Thanks! I learned while building this. ebay seller oregonknifemaker has them and they are decently priced with good reviews. 40 pipe welded on piece C.RegardsReinier, Hi Reiner,The small pipe is for a belt release lever can be added on after you paint, but having it there beforehand is ideal. This is a great intermediate step between the bench grinder with attachment and the full blown 72" grinder. His wife's Subaru timing belt change was a big part of his flat platen design.Cheers!D. The Motor is a 200 mm grinder With a 8 Inch Wheel. Belt tracks stable, cannot deflect the motor or the body of the grinder at all now. For the idler wheels, I used flat washers that are similar outside diameter to the inner race, but not too large as to contact the outer race of the bearings.Hope this helps,Dan. Due to variations in motor housings, we cannot guarantee proper fitment. and a bigger hole on front this is where the Wheel will go. The temperature you choose will dictate the final hardness. Thinking about just ordering the OBM D-backing plate with platen, both idler wheels, then a drive and tracking wheel. Thanks in Advance. This allows for tracking adjustment as the belt gets up to speed. Otherwise the spring might go inside of it. This seems to be a reasonable compromise, but not quite a compact solution like I wanted. The main power goes through the fuses there and gets distributed via the terminal blocks.Feel free to make some grinders! Dan, Hi, I am a amateur knife maker with a low budget. On washer here or there can compensate for construction issues, slight out of square etc.For me having a crowned drive wheel and a crowned tracking wheel meant having to tweak the motor until the belt was running nice and straight. I just dropped the spring in and put the tracking pillar down to press on it. I used the oregonknifemaker poly wheels on it. Hi Dan,I am setting up to build a belt grinder like yours. The shaft is 3/4" for about the first inch (leaving the motor) and then it goes to .687" for the next inch and a half. I shimmed with two pieces of PET from a plastic jug. Hi Rick, I've heard all sorts of springs being used. The KMG style has the tracking wheel about 1/2 way between the motor and the platen/large wheel. Hi Dan, Thank you for sharing this tutorial. I would recommend hitting the Walmart, then stopping in at the local food bank. Drill holes on the metal use a big Nut. Is it just a case of using the appropriate internal diameter pipe to fit the drive shaft and finding a method to cut a small section away to allow the key section of the driveshaft to slot in?Did you have to drill a hole to allow for a keyway screw?Thanks,Daz. Dan, Hi i was wondering how did u put the spring inside the tube.just dropped it in or some extra support.sry for bad eng, hope u can understand me:=), The spring I used was close to the inside dimensions of the tubing. For light to medium work this should be great. I would think a 1" wheel would be too narrow. Blob some grease on it and go.Dan, Dan, I love your design and detail and sharing it with us. The reason I ask is because i would like to make the tool arm shorter, enabling me to make a second arm for the tool rest out of the stock I have available.CheersMatt, Although I have never tried moving the motor on mine, I don't see a problem with moving the motor further back. To be honest I have never unlocked it from 90°.

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