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Antony G asked:


I’m going to be using a CNC router to flycut some MDF and I want to create a slightly rough surface. One machine I am considering buying has a spindle rotation speed range of 6,000 to 24,000 RPM. Does anyone know if it is somehow possible to set the machine to cut at a slower rate?
Do-n-it-4U. Re your answer. If I use a dimmer control, will it reduce the router travel speed as well? As I see it, for me to create a rough surface I either have to increase the travel engraving speed or reduce the spindle speed rate. Obvioulsy being able to do both would be ideal. However, if by slowing down the spindle rotation rate by using the dimmer, you also slow down the travel speed then I would imagine it would pretty much cancel the overall benefit.

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Antony G asked:


I need to cut some shapes out of 0.8mm thickness stainless steel using a CNC router and I basically need to know if it is possible. Importantly, the cutting tip size must be no larger than 1.5mm. It would be OK to cut through the stainless steel on more than one pass. I’m just thinking that the cuttting blade would go blunt almost immediately. Would a diamond tipped cutter blade do the trick. If it is possible what would be the best cutter blade to use?

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nick j asked:


HHO generator cell plates and will be in highly corrosive environment.. Band saw is not working well for large production. Any other suggestions will be greatly appreciated! Thanks!

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honker asked:


I’m in the market to purchase a Plasma Cutter.
Any suggestions where to see any tradeoff websites. What makes a good choice for purchasing the right make & Model.

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mevin217 asked:


i am looking to buy a plasma cutter for around $700. what is the best one for that price range?

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Antony G asked:


I own a CNC router and I have been cutting some MDF into strips. I’m currently using a slitting saw blade which is OK but ideally I would want to use a standard circular saw blade because it will cut through the MDF easier.

The trouble is all these circular saw blades are normally advertised for use with either a table saw or a hand-held circular saw. Are these saw blades OK to use with a CNC router?

Basically, what I have done is to bolt the spindle on my CNC router sideways and attached the saw blade using an arbor. Using a slitting saw works fine but I really want to use a circular saw blade instead.

I can’t see any reason why there should be a problem but for safety reasons I just thought i’d better check.

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Antony G asked:


I considering buying a CNC router table (max material cutting size is 1200mm x 800mm x 90mm). The website indicates the blade holder specfications are 3.175mm, 4mm & 6mm. Does this mean that the minimum router bit size I can use with this machine is 3.175mm? Basically, I want to cut narrow straight slots in a sheet of MDF and I need them to be as narrow as possible. Does this mean that this machine cannot cut slots more narrow than 3.175mm?

Finally, the sheet of MDF would be 30mm thickness. If the machine was to router/engrave completely through the sheet e.g to a depth of 30mm, would the cut be straight and clean with no tool marks on the cut sides of the MDF? Would a router bit with a thickness of 3.175 struggle to do this?

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funracingdad asked:


I have a large tank. It is heavy plate tank from an 80 gallon air compressor. I’m wanting to convert it into a large upright gas smoker. I am wanting to set it up so I can install wire grates every three inches for items such as pork chops and ribs then remove grates for larger items. I need to know of a supplier that sells round grill grates by diameter. Replacement Weber grill grates is all I’ve found so far doing google searches. I’m looking for a company that sells a selection of sizes. I’ve just purchased the tank and havn’t touched it with the plasma cutter yet to know the inside diameter of the tank.
Thanks for your help!

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Antony G asked:


I rent a small workshop that has a single phase electric supply, but I want to use a vacuum pump which needs a three phase supply. I’m thinking that there are two options available. Either I get the workshop wired up by an electrian or I buy a single phase to three phase converter. The trouble is I know absolutely nothing about these converters. Is it that simple just to buy a converter and that’s it? I notice that these converters have am HP rating. e.g 5HP or 25HP. What does this mean? I’m just going to be running one piece of equipment which is a vaccum pump for my CNC router vacuum table. Would I need to buy a converter with a high HP rating. How can I work out which converter would be suitable?

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Mobius asked:


I am looking for free (or cheap) CAD files (DXF or DWG format) that can be used with a CNC router. In particular I would like scroll work designs for decorating furniture.

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