Prazi 18" Beam Cutter Attachment for Circular Saws – For 7-1/4"-8-1/2" WormDrive Saws – Increase Cut Depth from 2-1/2” to 18”

I bought this to square up timbers instead of cutting from each side hoping they line up. This works very well with a speed square. I am going to look for an after market oiler instead of manually doing it.

This item is handy when you have a worm drive saw and regular chainsaw isn't close around

Idea not bad, but not for continued work, just for sometimes use. And it’s not for accurate cuts. But in case if you have no better options, it’s work.

I do a lot of wood working. From mill work to rough carpentry to finish work and crafts this product has helped in a few stages along that process. I use this in conjunction with a DeWalt DWS535B worm drive saw for cutting pre made beams and to cut end grain from logs and thicker slabs. I’ve also used this with a ripping chain to cut slabs with an Alaskan mill. -The Chain: Oregon 3/8 low pro- .050 kerf- 91 drive links. -The Bar: 3/8LP- 18” .050- but is stamped specifying a 63 drive link chain. ?? Both easily replaceable as basic chainsaw parts. In my experience the chain came very dull. Nothing that couldn’t be fixed in a short period with a hand file. Carry silicone spray or oil as a lubricant in longer cuts to keep it running smooth and cool. Also take your time. Prazi says you don’t need a chain oiler because the lower rpm of worm saws but an 18” bar through some dry hardwoods will most certainly overheat and over work your equipment. The safety (yellow) bar flexes easily and will cause the finish to chip away around the two hex bolts fastening it. I opted to remove this because the safety bar became more of a hinderance to me than what I deemed “safe”. Note: This saw works in opposite rotation as compared to a chainsaw and if you encounter kick back it’s going to come up between the legs as opposed to coming at your head/upper body. Installation is fairly easy if you’re knowledgeable around this stuff. If you have difficulty, look up a video. The directions that come with this are not precise, clear or displayed well for the many different makes of worm drive saws. It is likely you will have to remove the safety shroud from the saw completely or cut a large section out with a grinder. This is the case for a Dewalt DWS535B. Make sure to keep track of the springs and internals if you plan to change this back to a 7 1/4” circ saw. Overall this is a nice product that fits a niche for me. I have cut over 50 board foot and it is holding up so far. Time will tell if it is durable enough to make up the sticker price. It is not a highly crafted or machined item and you will more than likely find blemishes. You are paying the premium for the Mount. All attached accessories are basic run of the mill chainsaw part #s. Post questions and I’ll do my best to follow it up.

unit mounted on the my older Skill direct drive saw without a problem. Was worried that the 18 inch unit would be too much for the saw but ran without a hitch.

Holes were off aligned. Cheaply made.

Lots of tear out and end of cut was not square. I'll try again and if it doesn't work I'll have an expensive worthless tool.

you needed a special saw it to it.... so I returned it. Looked like a nice tool … but could not use